Mastodon instances need to defederate.

If you want to comment on any POTUS posts with the broader user base, you have to download Threads. Fuck that noise.

There's also a limited federation mode that can be used. Users and posts are still searchable, but they do not show on the public federated feed.
Useful for this exact case where a server may have beneficial accounts, but the rest should be hidden for moderation reasons.