Except that it isn't anything like Wikipedia. There are a huge number of problems with this type of "genealogy" of which erroneous data is just one. But even at this level:
Wikipedia, imperfect as it is does not involve mass cloning and propagation of errors, not only within the Wikipedia database but elsewhere. Correction is at one point only, has to be justified, and there is a well developed structure for controlling this process. Comparing this type of nonsense genealogy to Wikipedia is like comparing apples and belly button fluff. It's like saying that holocaust denial is a good thing because the more dishonesty out there the greater the opportunity to convey truth.