You may not agree with this paper, but you should read it:
"Aging and the narrowing of scientific innovation", Cui et al. 2026 (James Evans lab)
https://www.science.org/doi/10.1126/science.ady8732
"Analyzing more than 12.5 million scientists who published between 1960 and 2020, we find that novelty—the linking of previously unconnected ideas—increases with academic age, whereas disruption—the replacement of established ideas with new ones—declines."