I do understand your point. You are case 1: Meta federates with remote instance with no contractual relationship.
Case 1 will never happen because Meta will never allow uncontrolled content over their platform, they will always, always demand that yous sign an agreement before you write anything on their servers. Their lawyers will never allow strangers to publish just like that.
I'm taking about case 2: where Meta federates servers who agree to sign a chart with Meta. A legal framework, which also involves content moderation control, data flow control, etc. And this will cause a big risk of Meta slowly pushing their changes into the protocol. The more servers follow the bigger the danger becomes for everyone.
It's not a knee-jerk reaction, it's a safety precaution against a corporation of which we know the methods. Do you know of a bigger predator to us?
They don't want your friendship, they don't care at all about this open source fediverse thing. We are a risk to their business, nothing else. Other fell before, other will fall after. There is nothing to gain here for us and everything to lose, so block it.