Case in point: Chris Archer, Robbie Ray, David Price, and Michael Pineda.
But the issue is that strikeout potential is one of the main indicators of dominance. If you combine strikeout ability with good walk rates, only very rarely do you get sub-standard results, and when you do, it's usually because the pitcher is allowing a ton of hard contact. Kluber is just the opposite. Great strikeout rate, good BB rate, around league average hard contact rates, which is a recipe for the results he's actually been getting.