He's basically saying, "All of our remaining QBs are horrible. It doesn't really matter who is there." And he's not wrong.
But it isn't just the QBs. I watched the Jets/Dolphins game with a rooting interest for the Jets since I'm a Bills fan. I was aghast at how dang bad the offense is as a whole. It has been a while since I saw something so terrible. Even a below average NFL offense playing an average game could have won that game. The Jets D is legit, and the offense let them down. And special teams. And coaching. Horrid.