No, the Quest plus a PC capable of playing the game can play this. Given that regular Quest use requires no external computer, that's an entirely different proposition.

What I meant is that I doubt the game will ever make it to the Quest store, and even if it did the current quest hardware has no chance of performing adequately.

But a couple years from now? An all-in-one headset might be able to. It still probably wouldn't be an Oculus one though, as I doubt Valve will put it on a competing store.