There’s many Facebook groups that have you answer some basics questions before letting you join. I’m thinking it’s not as big of a hurdle as you think. One of the positives is that it will weed out those who don’t plan to participate.

I tried one other instance of lemy to join and there were no questions to answer. That server was way too overloaded. It made me think the questions might also be there to slow down the registrations. The servers could then keep up.