In the past few years my parents, one a tail-end boomer and the other an early Gen-X’er, have become increasingly more and more difficult to have conversations with.

I'm pretty old, but people that I know that are slightly older than me (Xers) are almost universally indistinguishable from boomer stereotypes. Effectively, they are junior boomers, but instead of a root of post-war abundance-driven selfishness, they had a root of post-Soviet-collapse apathy-driven selfishness.