I hadn't thought about it this way until I read your comment, but why not let them join the party? If they're federating like Lemmy and Mastodon, isn't that an acknowledgment that federation is a valid competitor? And if they're re-modeling themselves to act like this, doesn't that indicate we're on the path to the future and we should welcome as many converts as they want to make?
I have my VPN block it from accessing the Internet so no data gets transmitted. You'd lose some features, but it works.