I think at least part of that comes from the fact that the most vocal feminist and anti-misogynist (and ant-racism, etc.) instances get defederated by the admins of big instances like .world which tends to concentrate the more reactionary elements into instances like .world even though it has the larger user base. Since the people who would tend to be the most vocal fighting back against the dudebro types are in a different section of the fediverse that .world cuts itself off from, those voices aren’t heard and so the bigger chunk of lemmy (.world) gets a well deserved reputation for being worse than reddit in terms of crying, fragile (and white) men being overrepresented in the user base.