Talking shit about a person is one thing, grouping people into categories and denigrating or dehumanizing the whole category is another.
I’m not saying either are good, but the whole grouping people and creating an us vs them attitude is very harmful to society. Much more than talking shit about Joe because he’s being a dick. There are very few situations where it’s useful such as when one group by its definition harms the other, such as slave owners, corporate executives with a fiduciary duty for profit over employees and customers, etc… In any situation where there is nuance it’s best to avoid making groups.
Hate misandry or misogyny without projecting it as a feature common to all men or women or feminists even if you feel a large portion of them exhibit that feature.