@LMAO is flooding the site with random communities because they’re salty about being banned for claiming too many community names. They claim they’re trying to “fuck your entire site up” but I imagine it’s a relatively quick fix to delete all the communities they’re creating, LMAO.
Basically, this guy was spamming communities not instances. Basically he spammed a ton of subreddits. The guys who run the instance are above him and can just ban him and delete all of his communities.