Oh, one of those people.....neat lol
Free tip, don't believe words said by Devito because its probably a lie. Being dishonest and strawmanning stuff I say is something he does constantly because actual conversations are too hard.
For your point though, focusing purely on passing, which I assume is what the custom plays are, I thought his throwing sucked and yes most of it was likely because he still has poor form so he will suck in the rain, but I counted 3 dropped INTs by TB (also probably due to rain), and several he outright missed including a low ball to Andrews.
The Andrews one was the weirdest because he was both late in throwing it, despite eyeing Andrews well before, and he wasn't even close on a pretty easy straight line throw, which is why I blame the rain because those are the throws he is usually good at and why Andrews and Snead are his best receivers.
I won't lie though, right now as a pure passer, he is probably the 3rd best QB based on that beautiful RG3 throw the other week. His legs make up for it and keep games close which basically means the defense has to make a play to win which I don't think will happen against NE but could happen against KC or Houston.