Boomers may not have instigated SS and Medicare, but the were/are instrumental in keeping these systems alive and growing them.
The young will not be kind to Boomers ... and I can’t say I blame them.
Since the boomers are more conservative than the young and becoming even more conservative, then I do not expect the strongest Democrat voting blocks to suddenly sweep out liberal Democrat politicians and their agendas, so the only way that they could hurt boomers in the sense that you mean, would be for them to suddenly embrace conservatism, which is unlikely.