Lots of YT creators edit their face to look strange or unsettling. I'm the same as you, though I think it's more the gimmicky nature of his content I'm a bit put off by.
DeArrow is an open source browser extension for crowdsourcing better titles and thumbnails on YouTube. The goal is to make titles accurate and reduce sensationalism. No more arrows, ridiculous faces, and no more clickbait.
It's nice because it will affect all the videos equally. I didn't want to use it initially because it was messing with my ability to remember which videos I had already seen. I might give it a try again since people keep changing video thumbnails now