I actually answered a similar question just today in this comment lol
Edit: You also raise a good point
Would this be useful though, considering lemmygrad is heavily vetted against right-wing infiltration?
From my understanding you're correct, Lemmygrad is already very protected from bad faith actors (thanks to tools like defederation and the vetting questions to sign up in the first place).
That also means however that this community is less visible to some users - specifically the ones that would benefit from those replies the most.
I would be curious to hear the community's opinion on this so I might make a separate post :)