A lot of terms in the basic Buddhist texts cannot just be taken at face value.
This virtually increases the blame of Buddhism as a religion for oppressing humanity, because not only does it make these pronouncements, but does it so confusingly and communicates its concepts so poorly that we result with these popular conceptions and practices. It's like when people say, "The Quran does not profess violence." No, but Islam as practice certainly facilitates such an interpretation. At this point, apologists will say, "well, that's a problem with people, not religion." Semantics; remove religion and you remove the problem at the source.
Well, religion isn't going to be wiped off the face of the earth any times soon for many, many reasons. Even if the religious institutions of the world suddenly and mysteriously vanished, we'd still be left with these cryptic and intriguing texts known to the masses as books which had influence over many billions of lives through history. Even if religion were gone the intrigue of it would most definitely remain, that is unless the burning of religious books should happen to become fashionable at some point. Would you prefer that?
The pronouncements which you mention, save unimaginable disaster, will be around for ages and ages to come. Many will come in contact with them, and many will be moved by them to look more deeply into Buddhism, even if Buddhism comes to be seen by the masses as an elaborate hoax or something along those lines. This is true for the words of Jesus as well, and the Koran, and any other religious text. Religious texts are, in many ways, illuminating mirrors on dark or unclear facets of humanity. That is not to say that they are always more illuminating than confusing, and sometimes intentionally misleading depending on the authors. But whatever their flaws, it remains that these same words which have made countless people pause and give deep consideration, or in some cases reorient their entire worldview, will continue to do so.
Why is this? In the age of science and reason how would this happen? Since this is a thread about Buddhism, consider the four noble truths.
The first seems to always be roughly communicated as: "Life is suffering." It should be something more along the lines of: "Suffering is unavoidable in life." This speaks to everyone, correct? Even on a good day one can remember bad things which have happened to them, terrible things sometimes.
The second one seems to be roughly communicated as: "The root of suffering is desire." Without a better interpretation, this is still something that a lot of people can relate to. Unrequited love, feeling unsatisfied without more money, a better car, a better body, most people have cursed their lack of this or that at one point or another. Now, from wikipedia I've pulled this translation of the Pali and Chinese texts: "This is the noble truth of the origin of suffering: it is this craving which leads to renewed existence, accompanied by delight and lust, seeking delight here and there, that is, craving for sensual pleasures, craving for existence, craving for extermination." They use the word "craving", which sounds more powerful than just "desire", at least to me it does. It also seems to fit more in line with the experience of craving love, or craving a car being more tormenting than just having a fleeting desire for either. The implications of this are that the cravings listed are the cause of what would be a person's reincarnation, but the central tenet of the message is still that suffering is craving, and craving is suffering.
The third makes logical sense, roughly communicated as: "To extinguish suffering, give up desire." Let go. Let her go, don't torment yourself over her. Let him go, he'll only cause you pain. Let the craving for that new car go, it will put you in debt. Once again this makes a lot of sense. And, what's more, upon reading this any number of tormented individuals may wonder why they never though of this before. They may have already formed the opinion that Buddha or Buddhism could further help them if they sought out more information.
The fourth noble truth almost sounds like it's meant to recruit people to the path: "To give up desire, follow the eightfold path." If anyone was intrigued in the least by the time they got to the third noble truth, they'll be interested in heeding the fourth which now calls upon them to seek the eightfold path and follow it to some extent.
These are the established and widely known four noble truths of Buddhism, the vehicle by which many people have become seekers in the Buddhist realm, and by which many more will in the future. Likewise, many people who read about Jesus are intrigued by his relationship to "God the father", and by his life on earth and his words. And why not? Jesus and Buddha are two of the great mysterious figures of the human world, as intriguing to many as the origins of the universe. The pull of this intrigue is what makes us as individuals think, and makes us want more knowledge, makes us want to search within or without ourselves. This is one of the greatest aspects of who we are as individuals, but if we set off on any path without reliable guides we may end up in what looks like more trouble than we started out in. This is not my argument for religion so much as it is for understanding. By understanding the self-mirroring aspects of the major religions and teachers we can, hopefully, see through the fog and come to a better grasp of who we are and why we are the way we are.
No matter how much confusion these teachings of Buddhism may cause, I hope that they never fade into obscurity. They are a wealth even in their mystery, and maybe that is their most valuable aspect; their mystery, their pull on our minds to understand things we've never imagined possible.