It doesn't matter because the 35 year old isn't using his brain to vote anyway. He's just going by what social media, the news, and peer pressure leads him to. If anything, an older person has better established understanding of the world even if they're not better at working things out.
Anecdotally the elderly in my life vote far more off of vibes than my immediate social circle does. You could say it’s a bubble or bias, but it’s the difference between coherent programs and policy decisions vs “anti-freedom” or “socialism”
You actually know people who vote because of the programs and policies the candidates are expected to implement? I know people often pretend to but from what I've seen, it's always just the ones that the media has told them to think about and only used to justify favoring whoever they've already chosen anyway. I don't think it's even reasonable to expect voters to pay attention to such details because there are too many for everyone to be an expert on but if they vote based on broad philosophies like freedom or socialism, they can expect the politicians will make the many small decisions that more-or-less align with that.
the median seventy-five year old’s brain is not in the same condition as the median thirty year old’s