Actually, he is - if you use the commonly understood definition of "failed filmmaker" that was in effect until, say, yesterday.
Which doesn't make him any less of a failed filmmaker:
I know you're just baiting/trolling me at this point, but really - how has he failed? By whose standards?
He is neither baiting nor trolling. What's your definition of a filmmaker? Maybe then we can clarify things. Doing a (successful/failed) review about a movie doesn't turn you into a (successful/failed) filmmaker.
Again, as I mentioned several posts ago, RLM has made several web series and a few films in addition to his reviews (which are actually stylized documentary films, but I'm guessing neither of you would understand that).