Cultivate your community or become the nazi bar. Removing people well known for being bad is a good thing. All those other reddit alternatives failed because the dregs decided to make those places their new home and no one kicked them out, so no one that could keep those sites healthy ever came into the communities. The only time it doesn’t go down this way is when there is no other alternatives.
Side note: based entirely on that single sentence i wouldn’t let your friend into any bar of mine either, anyone who says that is either way too much of a childish edgelord or an actual horrible person.
Anyone who well and truly enjoys their job has severe mental issues that need to be worked out. Why would someone give effort towards something that won’t ultimately reward them? It’s not their project, it’s not their company, it’s not their passion.