Yes, I have seen that point and also a paper discussing it, but I am a bit skeptical. It could potentially just delayed… which transitions well into your speculative point:

Next is speculation on my part, but I imagine people are turning conservative more based on their wealth than their age. We saw a correlation between age and conservative sentiment because people tended to gather wealth as they got older.

That is a very good point because inequality is killing wealth accumulation. It’s a very good working hypothesis imo.