Well, just confirmed that bans on @fediversenews work as they should.
A troll just tried to post here.
Their troll post doesn't display on @fediversenews, nor is their post boosted by the Group.
Even better, they're not notified when they are blocked 😉
Until comment controls come to Friendica, moderation here will mostly have to be reactive.
I will continue using venera.social for groups until a better solution comes along.