@evan Yeah, that's been a consistent ask for a very long time, as I understand it. I think fep-7888 (and fep-5624, revised to apply to the context field as described in 7888) gives the most robust and reliable mechanism to federate that kind of reply moderation.
https://socialhub.activitypub.rocks/t/fep-7888-demystifying-the-context-property/3021/2