A short TLDR I guess: Milan (the instance admin) wants to wait and see how the situation evolves and not block them in advance. Though if they moderate like Facebook does it might happen anyway.
Hope this clears up everything for you! Have a nice day or evening.
Ty for the summary, and definitely agree that if Meta block instances because it doesn't fit with their TOS then defederation should be considered then.
The question was posed and therefore answered in German. I do not think any excluding was intended, and translation help like deepl usually is only an URL and a bit of copy/paste away.
Milan himself tries to keep Meta out of his life, but he does not think panicking without solid data is the way to go. He wants to keep an eye on how the situation evolves, and if Meta is practicing non-moderation like on facebook, he will not federate with them for that even before entertaining deeper ethical questions.