I think it’s less that people get more conservative as they age and more that they get more conservative as they get wealthier. Previous generations typically could get wealthier as they get older, but younger generations are being screwed over, hence the reversal.
I had more money in my savings account at 18 and made more money per hour than I have in savings and make per hour now in my 30s. I’m also driving the same car, the car I bought with my own money from working when I was 17, now that I think about it, because I can’t afford a nicer one. I literally have nothing to conserve, I own nothing, nothing was ever given to me, and it’s all being taken from me.