Less “competitive” mindset I think. I feel like homophobia has resulted in a lot of men taking their pent up sexual aggression out on women when they might otherwise be able to identify themselves as bi and just work out those feelings with another dude. Instead we have all these men spiraling into emotional black holes because women don’t want them right this second. I’ve heard anecdotally that if everyone felt 100% comfortable being honest bi people would probably be the true majority. So it’s not like it would fix the incel problem but there might be few enough that they couldn’t concentrate into inescapable singularities.