I never understood the theory behind learning by sitting. A QB either has it or he doesn't. If a QB was to learn a lot by sitting and watching, AJ McCarron must be an AMAZING QB to sit for so long.
Only way to learn and improve is to play, get hit and learn from your mistakes. Can a QB take a big hit and get back up like nothing happened like Tom Brady? Or will he take a big hit and get rattled like Trent Edwards. This is stuff that you'll NEVER be able to observce in practice cuz they're not allowed to get hit and is a BIG part of the "IT" factor. Remember when Tom Brady got BLOWN UP by Clements? I was impressed by the hit but I was even more impressed by the way he just popped back up like nothing happened. You can never "RUIN" a QB by playing him too early. That's a BS idea. If he plays early and he doesnt show anything in his first 2 years, then he never had it at all. You learn A LOT about a QB from when he gets hit. Josh Allen needs to start day 1.