I thought Joe Thomas had a bad game by his standards, but the strip sack was at least partially caused by McCown's lack of pocket awareness and that long, slow windup.
If he recognizes outside pressure and slides forward half a step, that doesn't happen. But it's McCown and that's how he's always been his entire career so it's not surprising.
As far as Kessler goes...
He should be playing no matter what. I totally get that there's no downside when you're 0-9 to benching any player to try and send a message, but McCown not only doesn't have a future, but he's an outwardly bad player at this point.
Anyone with eyes can see that Kessler doesn't have the physical skills to really drive the football with velocity. That really limits some of the routes you can call with him. What ultimately concerns me a lot more is the fact he seems very slow to process what's happening in front of him. Slow to recognize pressure, slow to diagnose coverages, slow on everything basically.
You can chalk some of it up to inexperience, but he wasn't good at these things at USC either so it's hard to imagine it getting THAT much better.
That's a shame too because his accuracy, his ball placement, his touch and timing are all NFL quality. A QB can succeed with a weaker arm, but they need to be accurate AND incredible at the mental/information processing side as well (think Brees).
The tools he does possess should make him a quality backup long-term, but the Browns absolutely need to explore drafting a better QB.