PC games that don’t need a keyboard/aren’t designed with a keyboard as a core input are already available on most consoles (e.g. many Steam games with controller support are already on the Switch).
Not saying this won’t work out — I think it will likely do fine.
But I don’t think this was meant for the more hardcore PC gamer, and a lot of controller-only gamers are likely fine with consoles (and for their portable fix, the Switch). So there’s a pretty niche set of gamers this will attract.