This comment shouldn't be downvoted: It gets at a low level asymetry in the problem. Only some men are actively problematic, but the combination of some problematic men and most non-problematic men tolerating or excusing their behaviour, puts all the women in the group in a position of dealing with the bad behaviour of "the problematic some".
In the past, this meant what's identified in the article: they would avoid the harasser when possible, and the presence of harrassers like Asimov was a deterrent to participation. Also, as with Harvey Weinstein, Jian Ghomeshi and others, there was a whisper network around him to ensure that women were warned of his behaviour. Male scifi writers would happily spend an evening drinking with him at a convention, unaware of any risk; females kept their distance as much as professionally possible.
Asimov knew, and was proud of, his status as "lech" (his word); I wonder if he was aware of the extent to which women tried to keep their distance from him.
This is a common theme that recurs amongst various forms of oppression: the oppressor's group doesn't have to think about the problem (this is a big part of privilege, btw), while the oppressed are forced to be aware of it and at least prepared to deal with it constantly.