It could be that he's hitting .150 in two weeks, but looks better doing it and they keep rolling with him.
But I really have to think if he continues to K 50% of the time, his rope is not endless, and 75 PAs with 40 Ks would justify sending him down, and wouldn't be kneejerk imo.
That's not necessarily true as we see early on, even if we take your benchmark of 50 more PA's and he's not tearing the cover off of the ball I still think he adjusts and hits the over.