Allen has improved leaps and bounds with this...just gonna require more reps...and would be really awesome if he turned to Jayden Daniel's trick which is to use VR at 1.75x speed...that would greatly cut down on the number of live reps needed.
Why every QB isn't at home doing this 3-4 hours a day in the offseason is beyond me. I would be relentless in using that, it's basically a free way to get as many reps as you want.
BB's problem is his drafting was garbage over the last decade and slowly eroded the team to basically be having to overachieve with subpar player to even make the playoffs and finally not even get in the playoffs the last year or two. Brady was covering up so much for him in terms of poor drafts that we didn't see the effects fully until he left.