Years ago I had found his channel and liked it, and then some video (I don’t remember the title or even subject at this time) came up on a subject I happened to know quite a bit about. He got to some point in an explanation, bungled it, and then hand-waved it away, saying the details were unimportant.

Stopped caring about anything he had to say after that, and I also then realized that there was a an entire genre of “person with no actual expertise reads Wikipedia articles and explains them with good lighting and high production quality.”