that's the sin of male socialization. Give it a couple of years and most of them get it beaten out of them. The reverse is also true, some trans mascs get corrupted by male privilege and male socialisation and end up becoming assholes. Not all of them though. I don't know what the answer is but it's not exclusion. When excluded, they just end up in echo chambers that reinforce their prejudices. Systemic problems are f-ing hard.
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