Because the only way any company does anything is if they can bank on nostalgia. Only problem is, every company thinks every fan is so braindead that they'll automatically buy into whatever they're selling. Even if its something that completely desecrates the original product. Now there are definitely consoomer brains out there that will do that but they are not the largest portion of a given audience by any stretch and this G4 revival is not a mobile game that needs to hook 1 whale to succeed. It's a network that needs viewers and it's already injected a lethal dose of poison into it's own veins.
Honestly even I fed into it at the start. A G4 revival seemed like a novel thing but, as silly as it sounds, Ding Dongs videos mocking it made me realize how actually pointless it is. There are some cool bits to it but If I really want to I can just see Scott the Woz on Youtube. Same thing with Jirard and same thing with Austin Creed. Plus I don't have to deal with naughty words being censored and I can just cut out retards I don't want to watch.