The target consumer for YouTube channel merch is children that love the channel and parents, knowing their kid watches this crap, looking for easy gifts. I seriously doubt anyone older than 20 is going to buy one of these. Instead of kids buying Nickelodeon or Disney merch, they buy this crap instead. Different era, same game.
I'm sure this piece of trash imported fresh from a factory in China will sell like hotcakes. Can't cost more than a few bucks to mass produce this. Factory probably upsells it to Linus at 10-15$, rest is pure profit.
Still, for 60$, you can get the iFixit toolkit, which can do a hell of a lot more.