The treatment of LMS is generally pretty vile, and his footprint is not all-encompassing enough that blocking/ignoring him isn't a solution
Like he isn't 2011 Ulti or some shit where blocking him would have served no purpose because topics just got immediately derailed by him - he got very specifically personal, insulting and rude and people were compelled to respond. LMS' posts are almost exclusively naive, impersonal, easily-ignored word salads.
Also LMS has, in the past, gotten every angry with multiple users and attacked them, mostly in retaliation, so to say it has 0 effect isn't true. That said, yes, his capacity to just blithely ignore it all is definitely something.
Not to be confused with XIII_Minerals.