Granted, he did. At the same time, Asimov was well known to be a groper, and even wrote a satire book called "The sensuous dirty old man" which would probably have landed better as satire had he not been fairly well known in scifi circles to be in fact a dirty old man.

There were some decent scifi authors at the time - not least, Ursula K LeGuin.

Ok, but "had some authors who wouldn't pass a 2025 purity test" is moving the goalposts quite a lot from "never published anything that wasn't by a White man, about a White man".

Le Guin, while a great author, was 12 when the first Susan Calvin story was published, and wouldn't be published herself until 18 years later. So she wasn't exactly being overlooked at the time.

And if you really insist on some identity politics in your science fiction, you'd do well to remember that in 1941 Asimov wasn't a White man. He was Jewish, which while not as bad as being Black had some very real consequences in 1940s America, not least being subject to a university admissions quota.