Your not alone. For how immensely popular he is, I’ve yet to ever watch any of his videos, or even have YouTube recommend them to me.
Night reason I know about him are a few videos from other channels, like the epic rap battles of history episode, and one that was criticizing his ghost kitchen. But I think the first time I heard about him was when every YouTuber was trying to jump on his hype when he was planting a ton of trees or something like that?