Donald Trump
Hopefully, competition can push people regardless. Maybe somebody created DonaldTrump on Twitter. So, maybe the real Trump created @RealDonaldTrump, for example. Well, so, with your example, if somebody creates a cryptocurrencies community and mutes people talking about Monero, then maybe, through the art of supply and demand, they could try to band together to create their own cryptocurrencies community.
Competition
Then, they could make videos and talk about how retarded that other community was. That creates peer pressure on the original community. Meaning that either that guy reforms his ways or his members may migrate to the new community. That's competition. That's supply and demand. I hope things like that happens as a mechanism that seeks after balance or competition.