He was discovered as part owner of Victory amps, and he pushes them heavily and reviews them very highly on his channel. He had clearly actively avoided telling anyone he was involved with Victory, to the point of shadiness. He could have easily just mentioned in any of his Victory videos that he was involved with the company in some way, and none of this would be any kind of issue, but he pretended like his opinions of the company were entirely unbiased to all his viewers. Pretty much lost all credibility for a few extra potential bucks.
He said MANY times previously in videos that he is not involved in Victory, then when people started calling him out, he changed the story to "well I don't really design anything, I'm just a partial owner". The way he handled everything is incredibly shady, and frankly, I have a hard time giving Anderton's my business anymore because of it. This is the kind of guy that only "feels bad" about something when they're caught.