you don't understand ActivityPub. You're objectively wrong here.
that there's any arguing shows your supposed objective stance is objectively wrong. Stop speaking for people you clearly don't. It's a sign of narcissistic behavior and entitlement.
it's not like that at all. It betrays a lack of understanding of the platform you're using. Defederating even a day later would clean it up fairly quickly. There's virtually nothing lost if they defederate afterword. Your analogy is just so wrong on so many levels.
And to address your supposed algorithm issue: ActivityPub doesn't work that way. It can't change a feed in realtime. It just publishes. And again. It won't affect you. Even if they hacked and broke the spec, all it would do is change what you see from Threads. Whoopity doo. Join a Kbin instance and just block it from your feed.