Draymond is not a scrub. Neither is Wannamker. Neither is Pascal. Even Wiggins is doing well this year on defense. Oubre too. zcurry wasnt good this game. They made runs when he was on the bench.
You're underestimating the impact Curry has on opposing defenses. Look at Wanamaker's 2 made baskets: Wanamaker is driving to the basket, and Schroder is in perfect position to stop him. But then Schroder realizes that he's leaving Curry open so he abandons his defensive position to follow Curry: Here, Wanamaker and Curry are running in transition. Schroder or Lebron should stop Wanamaker, but they're both focused on Curry which gives Wanamaker a free run to the rim: And with regards to the Warriors making runs with Curry on the bench, I suggest you look and see who the Lakers benched when Curry was on the bench.
I don't think they can win a ring without Kyrie, especially given Dinwiddie is out for the season. They just don't have much depth. But I do believe if they can flip Kyrie to a good 3D wing player + a good center (RoCo + Capela, for example), they'll be the favorite to win it all this year. It's not happening, so let's see if their offensive prowess (if Kyrie fits really well) can offset their defensive deficiency.