A secret unspoken thing about this is that in the past, more lefties died before ever reaching old age, by the systems in place intentionally making their lives harder, so they’d either get killed or kill themselves.

So the older and more conservative hung around by purely survivorship bias.

But the systems in place are now even failing those who they used to unfairly benefit, making it so more lefties survive and also more conservative get radicalised against those unfair systems and turn left