This happens in lots of different fields. I feel like people need to start developing pseudonyms when they achieve success, so that they still get feedback. Either that, or they have to carefully cultivate a group of no people to hang around and tell them which ideas are stupid.
Stephen King tried this (as Richard Bachman), but he was found out after just 4 books. His last novel as Bachman sold 10x as many copies after the connection was made known.
Radical in their area of expertise. If you have spend decades building certain mental models and then theoretical models that most likely work well(as you were rewarded for them) you are likely get stuck in following those.
Does not mean you have well working models outside these. Or that those same models will work well in entirely distinct contexes.
It’s like being a billionaire; you stop getting “no, that’s stupid” feedback and it rots your brain.