They already attacked it with everything they've got lmao
As in, in 2012. They outright replaced people's email addresses in their profile (makes it harder to reach people outside the walled garden, makes it harder to transfer your credentials to a competing service) and I've heard Google+ links got blocked
Zuckerberg is many things, not everything he's accused of (Trump/Cambridge Analytica) might be entirely accurate but he is at least partly a bit of a scumbag