I would agree with this if Still actually showed signs of competence or progress, but he doesn't.
He looks like someone who is unsure of what he's doing and can't communicate a clear plan to the players.
And the idea that we have a persistent core of bad players that need dealing with is undermined by leaving new, expensive, signings on the bench, and leaving our own youngsters out, because he's too one dimensional and clueless to form any sort of tactical plan other than hoping for an overlap and getting it in the mixer.