Older people (omitting any triggering mention of boomers) can often struggle to keep their opinions and thinking relevant as they can become less receptive to new information.
It’s got nothing to do with age or receptivity to new information. Vaccines aren’t new. This isn’t an instance of an old person not understanding something that came about “past their time.” Furthermore, there are plenty of younger people who are on the anti-vax bandwagon, so I’m not sure what your obsession with age is.
I don’t think I’ve misunderstood you at all; I just think your opinion is wrong, bigoted, and ignorant.
This is an unfortunate fact (that he’s gay) that the Right will focus on to further confirm their delusion that non-hetero people are likely to be pedophiles.