Whether Nico goes on to have success or not will have very little to do with his stance and arm motion. This is what the analyst always do regarding quarterback prospects. They break down the mechanics, etc. This might work with baseball pitchers but imo not qbs. Arm strength and mechanics matters some. But not unless they are good at all the other things.
What makes or breaks a quarterbacks ultimate success is their mind. Their pocket presence, moxie, and ability to feel pressure and slide around in the pocket to buy time while keeping their eyes down the field. Also, seeing the lanes and just having a great understanding of physics, momentum, and angles. That’s what makes a quarterback great. There are tons of examples of guys like JG, that had good mechanics and size, but we’re just terrible at playing quarterback. Time will tell if Nico has it or not. But his release and stance won’t determine how far he goes.