I would have to say that it depends on what you consider 'automating'. There may be worthwhile occurances for it to occur in code. (eg, someone commenting on trying to automate the removal of such tags).

I have no idea what the janitorial process is here, but if there are common tasks that janitors frequently need to apply, I'm all for giving them access to filters/scripts to clean up common mistakes, provided that there's a human there to apply it, to judge that it really is a mistake. (and not just something blindly done to all posts)