Right, that's certainly possible. Is it enough for us to start thinking about de-federating, maybe? Arguably this has been true since forever on any public forum. I think what's needed is better mod tools on Lemmy in general.
Personally, I think it's best for us to be patient while things settle before we consider any action. FWIW, we don't see much incoming traffic here anyway since the subreddits started coming back online after the 48 hr blackout.
If things start getting out of hand and this instance starts getting bombarded with just bots/troll, we will likely have to consider de-federation (or some other alternative).