Riot does not care about trolls

They don't delete posts for being critical of Riot policies or other players. They delete them for violating the individual board's guidelines or the Universal Rules. You should've received a notification that stated what the removal was for. If you need clarification, let me know.

There had to be some other reason, as I post about the legitimate and ignored flaws with Riots system all the time here. It gets me downvoted, but my posts never get deleted.