Yes something needs to change and I feel you are seeing the real panic of the right as more and more younger people can now vote and are just pissed as everything they are doing.
People have been saying this since the 60s. Lots of young people are still conservative and many areas are still solidly red. I don't see a massive blue wave that garners a supermajority happening anytime soon.
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.
But that link has been progressively eroded, so people are no longer switching.
Essentially the conservatives are killing the golden goose in their incessant pursuit of consolidating wealth.
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.