Hold on, think this one through.
The admins aren’t worried about jury nullification per se. They’re worried about what regulatory authority can do - shut down the instance, hold admins personally accountable etc - if the instance is classified as a media source + has content which could influence a jury.
This is no different from the advice given to other media outlets globally.
Maybe spin it this way. If the very act of having articles celebrating his actions on lemmy.world means his defense is compromised would you be OK with that?
Site size doesn’t matter; prosecution of the actual people who are associated with it still occurs.
There is practically zero risk for users of lemmy instances, but those who host the instance are identifiable through domain registration, hosting or similar.
I don’t blame the admins for acting in self interest - ultimately they’re putting in the effort and wear the risk.
If you don’t agree with it you’re welcome to host your own instance - with blackjack and hookers etc.