We know that women students and staff remain underrepresented in Higher Education STEM disciplines. Even in subjects where equivalent numbers of men and women participate, however, many women are still disadvantaged by everyday sexism. Our recent research found that women who study STEM subjects at undergraduate level in England were up to twice as likely as non-STEM students to have experienced sexism. The main perpetrators of this sexism were not university staff, however, but were men STEM degree students.
In real life what “respectful manner” is becomes a matter of whether another person (and their friends) likes you or not. Sometimes retroactive.
I don’t like this attribution of some kind of affinity to justice to “people” or “men” or “women” or whatever. “People” are a rather cruel and fallacious substance most of the time.
Also jerks and incels may be that not entirely through their own fault. There may be wrong upbringing, or some trauma, which others consciously or unconsciously trigger, or whatever else, humans are complex and putting labels in such a way is disgusting.