Seems very Taleb's Ugly Surgeon / Berkson's Paradox to me. It's like how software engineers who are at Google are worse if they're better competitive programmers.

e.g. https://viz.roshangeorge.dev/taleb-surgeon/

Makes sense. My perspective is that fast learners are fast because they absorb information quickly without the overhead of cross-domain synthesis. They have more logical contradictions in their minds which they haven't resolved or aren't even aware of. Their worldview is not coherent as a whole. In some cases, they don't have a worldview; instead they just rely on expert data to inform their decisions... But the experts themselves are often victim to the same kind of domain-specific tunnel vision. Such people often lack creativity in their work because cross-domain pattern synthesis is precisely how you can solve complex problems that haven't been solved before.