I think this thread is confusing two issues.
The first (where the OP started) is what have boomers done for themselves and generations to come, and what is their lasting legacy? On that basis, the generation as a whole is found wanting, I think. The gains that were hard-won by pre-boomers and early-boomers are fast disappearing, and we (I sort-of count myself, born just a bit later than 1964) have allowed that on our watch. Notwithstanding a few of us speaking out and doing what we can to fight for a more equal and caring society, the boomer generation as a whole has not effectively defended society at large against a neoliberalist agenda which has seen a massive redistribution of wealth from ordinary people to the top 1%.
The second issue is have boomers disproportionately benefited from economic policies, and as a generation are they now living the high life at the expense of their children and grandchildren? To an extent, many are. But as someone said some way upthread, you need to factor class, race, gender, disability and just personal luck into the analysis - some have done very well, others less so. My parents (pre-boomers, born early 1930s) did extraordinarily well from working class beginnings, made shedloads of money out of right to buy - their council house in London ended up being worth a fortune, they sold it, moved out of London, retired early and live very comfortably indeed off the proceeds plus their pensions.
In my perfect fantasy future, boomers, pre-boomers and post-boomers collectively decide that what matters is a good standard of living for everyone and collectively decide to do something about it. With a bit of redistribution away from the 1% there's plenty to go round. So if we all think that what matters is affordable housing and pensions available at 65, let's elect the politicians who'll deliver on that, and bolster the organisations (like trade unions) which should have the clout to hold those politicians to account. Rather than use the race-to-the-bottom argument (bad boomers, getting what we who come later haven't got and can't hope for) let's try racing to the top instead, and get a good deal for everyone.