You are one of a dozen or more people to say this. My response followed by diversion or silence is always the same.
Prove it. But make sure you know what you're talking about. Focusing on an area because Jones' O's route trees put 3 receivers in that window... is not "staring receivers down".
I am willing to bet that he doesn't throw off his backfoot "every other throw"... or very often at all except when under pressure. EVERY QB throws off his back foot or without a good base some times. One of QD's better completions of the year was thrown off his back foot about 20 yds down field for a big gainer to Wolf. When it becomes a problem is when you do it and it turns into INT's because you get nothing on the throw.
The first INT vs UF was thrown off his back foot... toward a stumbling RB... with Jack Jones in his lap. Don't deny it before you go rewatch it. The INT on the goal line was a receiver not completing his route correctly. The ball was out quickly from a good base. The pick 6 was thrown flat footed and again with Jack Jones in his lap. There ARE situations when a QB cannot step into a throw but need to make a throw.
The INT vs ISU was a terrible play and read... but he neither threw off his back foot nor did he stare the receiver down.
You can prove yourself right. Since he does it "every other play" then it should be pretty easy to give the game, quarter, and time left on the clock of a few examples.
Most people just get mad. Some will go with the "everyone saw it" answer. Hopefully you aren't too proud to either prove what you claim or admit that it isn't true.