I think they are terrified their Ponzi scheme is drying up.
Their ponzi scheme?
Social Security was implemented by FDR in the 1930s, LONG before any Boomer was born, of all the generations that have paid into Social Security, the Boomers have paid, by far, the most adjusted for inflation. Further, of all the generations who were screwed over by the changing economies, Boomers are actually one of the WORST when it came to retirement. It was for them that companies changed from pension systems to the various investment schemes... and for many Boomers they saw their retirement investments wiped out in the Great Recession (which, for the record, is why you then had fewer job openings for many Millennials as they came of age, Boomers weren't retiring because they HAD to keep working to rebuild their retirement funding).
Anyway, as to
why should I not feel a bit of grief when thier wisdom has messed me over?
Because I do not believe in judging people based on their group membership, especially based on a quirk of their age. Yes, some Boomers dropped the ball, some Boomers were evil, while others did the best they could with what they knew, and others went above and beyond. To lump all these individuals together and hold them accountable for what the worst of them did is simply an exercise in collective guilt meant to make you feel better about the situation you find yourself in. If your parents, in particular, did something you feel was messed up: confront them over it and talk to them about it. But also ask yourself, what could your parents have done about the Boomer Banking executives who decided to arrange subprime mortgages like they did and triggered the Great Recession? What could your aunts or uncles done about Congress voting to extend most favorite nation status to China at the end of the Clinton administration? Perhaps, if they voted for Clinton, you could hold that against them and challenge them to understand that voting for Clinton was a mistake, and if their Representative and Senator voted for it and they voted for them, you could hold those votes against them... but are voters culpable for EVERY vote a representative they voted for makes? What if they specifically called them to lobby against a vote?
At the end of the day, this obsession with collective blame for "how things are" is pointless, because it casts blame to widely and allows those who actually made the decisions and took actions hide as part of the collective, and while you lash out at the collective, encouraging anger and division between generations, those with the power laugh and continue to do things, all while you're pissed because you have 20/20 Hindsight and your parents, and their peers, did not.
It's always easy to judge looking back at things, and while yes, there's SOME thing that clearer were bad ideas at the time and shouldn't have been implemented, and you had people warning about those bad idea at those times and were ignored (Ross Perot on outsourcing comes to mind, much of the American Social Conservative movement on... well I'm not going to start counting topics); other things, like the idea of the pathway to success involving going to college, nobody questioned at the time, all the data showed it to be true, and the common person had no way of knowing how things would end up. The only reason we know now that it wasn't the best path forward for many is that we can look back and know that as we have information those at that time did not.
And that's fundamentally why I hold this entire exercise is just a way to shift blame and feel better about yourself. Collective guilt and blame are inherently unjust AND much of said blame involved hindsight that it is not fair to expect people to have had at the time.