If he did it 1 on 1 then you'd have a point. But it was a 6-man match, and he cheated to win. It's not like anyone's skill was diminished here unless you're one of those delusional Sami Zayn fans who think that if he doesn't have a belt than he's "buried."
I do agree that it seems a bit rushed, but the way they handled it is fine. Heel cheats to win a title match is as old as time itself. Now if Jinder ends up completely dropping the ball with this opportunity then that's one thing, but it's barely been a week since he won. As I've said before, I don't think he's god's gift to wrestling, but I'm for sure going to give this push a chance and see where it goes.