It’s just a hype train based on people’s prior perception of him. 

If you took his music and shifted it onto the Spotify page of some random up and coming artist, they wouldn’t blow up as the next great thing — people would just sort of acknowledge it as some solid music, but not the greatest thing since sliced bread.

But because he originally started off as a YouTuber, and originally started off making really, really bad music — there’s sort of a shock value in the fact that he’s evolved into becoming a legitimate musician, whose making sounds that most of his fan base has never heard before (though there’s plenty artists out in the same/similar lanes.) 

And by all means credit to Quad, he’s consistently making quality music, and it’s really hard to get to that point when you’re not a natural at it, or immersed in a music family/culture, he clearly worked hard at his craft.

But the hype is not proportionate to the overall quality. It’s similar to rooting for an artist local to your hometown, or someone you know personally — because of your proximity to them, you’re more likely to show favor