Dark doesn't talk about music because he doesn't actively listen to music. That's cool. Not everyone does, and nowadays there's so much to listen to that it can be overwhelming for some people.
DSP, though, doesn't have any hobbies. Now, by 'hobby', I mean genuinely having passion for something and doing it for the satisfaction of doing it. That's the way I see it. It's something that develops you, at least a little bit, as a human and makes you progress while enjoying it.
He's more of a consumer. The closest thing I'd say he has passion for is
devouring food. Not cooking, not the creation of the meal and putting in effort to please himself and the people he cooks for, but the blind consumption of a product.
The blind consumption of digital media as well. In my book, watching SpongeBob and random anime isn't a hobby (for him), watching TV is a thing that exists so any basic lifeform can enjoy. That's not really a hobby (imo). He has no knowledge of anything regarding media. We know this very clearly from his Ask The King and that weird girlfriend introduction stream he did with his horsewife.
Plus, he has a very shallow mind, so we can't even consider him watching artful and deep movies.
Gaming isn't something that he knows that much about or has any passion for either. For his 10+ years of literally only gaming, he has about as much knowledge as a random Twitter user under an IGN post. "This studio did this and it was shit, this studio did this and it was good, this got X award and it was deserved, this got X award and it wasn't deserved, gameplay this, graphics that, that game sucks, that game's great". Meaningless, shallow opinions with 0 justification.
Might as well ask Khet what she thinks (if you're willing to wait 3-5 business days for her to process what you're asking her).
He doesn't like meeting people, traveling (staycation in a hotel doesn't count), hell, literally anything I can think of that doesn't involve spending money.
He's not good at handiwork, he's not passionate about making his own stream setup be cool and personalized, he genuinely seems like he doesn't give 2 shits about anything outside of getting money and spending it as fast as possible. Like some street thug.
At least street thugs hang out with their homies. DSP's homies made a diss video about him.
Feelsbadman