Gregory's Server
Point 1:
Meta's ability to scrape is not made worse by your defederating except in the most marginal terms.
Point 2:
If I were looking to #EmbraceExtendExtinguish I wouldn't be limited to a single server and I wouldn't be deterred by a few servers who are deciding not to talk to me.
You think Meta is going to shrug their shoulders if the instance of 10 people, foobar.example.baz, decides to not federate with them?
If _everyone_ defederated with them do you think they would just give up?
Point 3: ActivityPub is _exceptionally_ weak against a corporate attacker.
Hell, mastodon last I checked doesn't even support the latest version of linked data proofs or whatever that spec is being called this week
It would not be hard for a corporate entity, in the name of security (not even features), to start pushing their own extensions here that aren't backwards compatible and start listing servers that aren't on their spec as "insecure" or "not standards compliant"
They'd even be right.