I mean, you can use that "logic," but the problem is that most practice squad players, backups or average guys don't put the play on film that Wharton did when given their opportunities.
Perhaps you'll end up right, but I don't think that just because a guy has been in a rotation makes him inherently less productive because he gets more snaps. I will say that the KC fans I've seen on social media loved him, and considered him their second best DT, regardless of his "rotational" status, and generally considered him a dawg, so I'm going to give him the benefit of doubt until he shows otherwise.