The baby boomer generation stands accused of "pulling up the ladder behind it" in many countries
, and there may be something to that (though I rather think the bigger problem isn't any particular generation, but the multi-generational greed of the wealthy few
who simply don't know when to quit).
I think what's going on with the American conservative movement is that a long-term alliance of convenience between a faction of the wealthy and a (mostly white) faction of the middle and working class is starting to spin out of control. The original tactic this movement used to employ was that the wealthy patrons would validate (and exploit) the fears and resentments of people who had felt threatened or left behind by the social upheavals of the Sixties (anti-racism, women's lib, anti-war movements, free love and so on), and those clients would in turn reward them with votes (which they could use to support an agenda of self-enrichment).
This worked in part by the use of dog-whistle politics by the patrons -- they worked out that you couldn't actually say "we won't let the government steal your hard-earned money and give it to lazy n*****s" but that you could
repackage that message as "small government" and "states' rights" and be tacitly understood -- and in part by portraying the whole exercise as comfortably centrist and mainstream and concerned with general prosperity. But we've reached the point where the latter fiction has collapsed into open class warfare, and where the dog-whistle politics is breaking down as either people forget how it was supposed to work or (more often) forget the need for it. It's harder and harder to hide that a huge part of the conservative client-base has grown totally out of touch with the rest of North American society over the past few decades, especially that part of it that's been home-schooled and bible-colleged and raised in a parallel universe of conservative media and think-tanks.
That's the way it seems to me, anyway.