I tend to agree, generally.
However, there are definitely aspects of various generations, call them "stereotypes" or "tendencies" that hold true IMO. Also, there are certain aspects that are simply agree related based on when various generations "came of age", particularly relative to tech.
The best description of the difference between Xers and Yers that I've ever heard is that "parents of Gen X asked them 'what makes you think you're special' while parents of Gen Y told their kids 'you're so special'". We can debate the relative merits of each, but so far, that's been the best explanation I've seen.
There are other aspects, such as Gen X being the first generation where divorce among their parents became normalized, meaning that some Gen X kids of divorce may have been made to feel "weird" about it as a kid while your typical Gen Yer is more likely to have been raised by divorced parents *and* have had that seen as far more normal then Gen Y.
Finally, I tend to find that who was in the White House (or the political climate in general) when someone becomes politically aware is very, very telling both in their political leanings and resultant behavior.
Gen X, in my view, created the "aspirational class". Something I'm coming to find more and more distasteful. Gen Yers took "aspirational class" and added crystal meth.