I'm hoping the influx to Mastodon doesn't bolster the exclusion of Pleroma and Soapbox. Popularity is a sign of people following the crowd, rather than following the best software. This article is a good intro to community based moderation, but doesn't mention moderation at the user level. If you don't want to see it, block it yourself rather than relying on your server to make that decision for you. The fediverse is segregated unduly because of trusting moderators over individuals