People who think generative AI just remixes the past are wrong. Don't listen to them.
I agree and hope you’re right! And I’m a “boomer.” (And there are plenty of rants against AI from younger people).
One key thing you leave out in this discussion is how you get from one level of the pyramid to the next. In particular, it is human judgment -- a finite resource -- that determines which interesting things are useful. Because that human judgment is limited, it doesn't follow that the volume of useful stuff scales up linearly with the volume of interesting stuff (personally, I don't even believe interesting scales linearly with novel, but that's a different discussion). I think what'll happen is we'll be overwhelmed with (marginally) interesting stuff, nearly all of which will have the lasting significance of your average tweet
Your confidence in nuclear power reduces my confidence in your other predictions. Fission power is a dead duck and fusion is so far behind solar (or, if you prefer, natural fusion) that it will never catch up, even if it can be made to work.