It might have something to do with the fact they haven't been able to prepare anything in that cluttered and health hazard mess of a kitchen of theirs for years now. It's also not too surprising he lacks even some of the most basic life skills due to his ultra sheltered upbringing. Despite having had spent so much time on the internet and Twitter, he seems to be quite insular to anything that is beyond his immediate circle of delusions.
He's more of a Furry/Brony than he is a weeb.
The only weeb shit he seems to be into and know about are those mainstream stuff that widely aired in the west. IE Sailor Moon, Sonic, Pokemon, DBZ, etc.
I'd say an entry level weeb. That Neptunia shit was due to the influence of trolls known as the Idea Guys.
Besides, he doesn't seem to be aware of the Virtual Youtuber thing that has become a popular medium right now.
You think some who thinks he's a fictional character would nose into something like that right?
On the other hand, thank God he didn't latch on. The last thing I'd want is him going around harassing Hololive talents with his shit.
This is a guy who is a amalgamation of whatever pieces of media he tacks on that he comes across and catches onto.
He really does not know much about Japanese culture. Or any culture beyond freaking Virginia.