PlumberJoe and a half dozen other handles he was using got banned for shilling, so I would not give any of his reviews credibility.
PlumberJoe, Woodie, BxBennyBlanco, Dilrupa, SpaMilk, Nosespa's, FlushingPerve, TLC_Guy were all him shilling. He has another dozen or more on USASG, Utopia and Rubmaps. He got called out on Utopia Guide, but they don't seem to care. My guess is because they have paid advertising on that site. If they ban him over there, it will probably piss their paid advertisers off.