However, he wasn’t a mathematician, so he probably had some level of “dispreference” on the level that most physicists have (so, less than most of them, but maaybe more than some (maybe only current day?) theoretical physicists?). e.g. most aren’t going to read books on category theory or even topology or real analysis, and doing so would mark you as more mathematically inclined than the rest.
It may just be “he didn’t do things like read a book on topology”.
However, he wasn’t a mathematician, so he probably had some level of “dispreference” on the level that most physicists have (so, less than most of them, but maaybe more than some (maybe only current day?) theoretical physicists?). e.g. most aren’t going to read books on category theory or even topology or real analysis, and doing so would mark you as more mathematically inclined than the rest.
It may just be “he didn’t do things like read a book on topology”.