Yeah, different things work for different people. I'm retired and 100% stocks, but that's because I have a pension and my house is paid off and if shit really hits the fan I can just withdraw less, or even zero, for a few years and it'll only impact my luxury and travel spending.
I do think there should be some guardrails, but you're right, they shouldn't be too restrictive, people should have the choice.
You're also right when you say education early in life would be a big advantage.
As for auto enrolling in these funds; that definitely should be prohibited. Until someone makes a selection it should go into secured bonds, just like a settlement fund with a brokerage. That at least gives them the opportunity to become informed, and if they don't take that opportunity, that's on them.