Because he used to be literally from /mu/, he was an undiscovered music reviewer back in like 2010-2011. He was on this board. He was reviewing albums that /mu/ was interested in because he was also browsing /mu/ at the same time. There wasn't another channel on YouTube that was doing what he was doing at the time, especially not being from 4chan.
After he became popular /mu/ decided to hate him, because that's how it works here. Some people like him from back in the day, some new people like him because he's aged into a reddit personality basically. These things are also why a lot of the board hates him, also because he's very popular now. He claims he doesn't browse the board anymore, but I have my doubts. Hi melon.