Sure, if this were their first exposure to centralised social media and if they weren’t members of a highly targeted minority that are ongoingly harassed on those platforms.
But this isn’t their first time. They’re here specifically because they chose to get away from the experience that mega instances offer gender diverse folk.
And ultimately if Meta removes the hate, we will then refederate because the hate is gone and if that means some members of our community head back to a mega instance that takes hate seriously, that’s an acceptable outcome to me.
And if they don’t remove the hate (which they won’t), we stay defederated and it’s all hypothetical.