@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.
Why even delete those communities? Just let’em have their three megabytes of database space that gets never used and be done with it.
Because they will show up in the communities list and be propagated (in the list) across federated instances.