The article says they were "pressured", it doesn't seem to to say how that pressure was applied. To me, it reads as though compliance was not mandated, just requested. Without more info, I suppose it could be taken either way.
If Zuck has a real problem with that, he can sue (as per the SCOTUS ruling on standing vis-a-vis First Amendment protections against government coercion).
He isn't suing, and it's up to the rest of us to make our decisions based on how we feel about that.
