I imagine they are in damage control mode and are hoping to stem the outflow of users’ attention spans to the Lemmyverse while their current actions are the Current Thing.
I reckon they are budgeting for a 1-2 week martial law period to try and stabilise and will probably force open all the closed subs and make use of repost and chatGPT bots to simulate decent engagement, possibly even paying for comments too.
It would also be very interesting if they roll back on their censorship of open discussion of certain topics to attract back previously “resettled” users.
Do you mean an entire instance? Heaps of people are asking for this.
Blocking an individual community is trivial however, and can be done by opening the community sidebar and hitting block.