Your first quote, which I also saw, is the reason the GM (Bill) had to go. There isn't anybody who thinks he can't coach. He certainly had some great offenses and defenses.
The only real issue is modernizing the personnel/scouting approach. Patriots are the only team in the NFL with no analytics department. They had the smallest coaching staff in the league. It reminds me of Moneyball. Every MLB team now does what Billy Beane did. It's that way in the NFL, with one holdout, Bill. He likes the old school scouting and "feel" evaluation, and honestly, with defensive players, he still nails it more than most. With offense? He misses. He also doesn't pay attention to draft values. Strong looks like a good LG, great, but you could have had him in the 2nd or 3rd round.
That stuff had to stop. Now it will (I hope).