What trust would you need?

They can’t own my data. It’s already out there.

They can’t KYC me.

I can choose to read only or if there was a write function those events go to other relays already.

Spamming and other shit will be a “one strike and disconnect forever” deal.

They also can’t forge my event without my nsec.

With that said, not sure any event data written by Facebook nuts would compel me to connect.