You gotta be careful with these time stamps on drafts. The 2009-2012 drafts featured tons of whining by entitled, crybaby Pats fans at the time that didn't want BB to take advantage of the Rookie Cap which was new in the 2011 CBA. Many fans had no idea what he was doing and our entire society has no patience anyway. He loaded up on picks and did draft well, but many of those players were mocked daily on messageboards, with fans listening to Felger and Mazz like morons. The media had a field day with it. I remember guys like Hightower mocked by 98.5, McCourty, Nink (I know not a draft pick by NE), etc, etc, etc, etc. It was relentless, so people became conditioned to believing a misrepresentation.
It takes 2-3 years to really see players evolved in the league, or devolve, for that matter. As BB said, he went for a dynasty from 2014 and beyond likely knowing he needed veterans and some small infusions of talent because he already had his base of players.
And, his 2013-2016 drafts weren't that bad. Plenty of standout names are there. Butler, White, Trey Flowers, Thuney, Mason, Andrews, Jon Jones, etc. There's a lot to like.
From the 2009/2010 start of the rebuild, his trades, minimal, yet strategic FA signings (Revis, Gilmore, etc) that came later were always going to block draft picks from emerging around that time. The team got old from it, he probably knew Brady was gone with his desires to start over with a new QB, meant loading up on picks and doing what he did from 2009-2012.
Also those drafts were deep. He also trades out of the weaker classes and looks elsewhere.
We don't have a clue on how the 2019-2021 drafts will end up. Right now, it's a mixed bag because they are just now starting out on this journey with a QB they believe in.
And, you can't discount Goodell's continued cheating to weaken this franchise with the stolen picks in 2017 and 2020. He'd likely have a couple more key cornerstone players in here if not for the obvious collusion by 345 Park Ave and multiple owners on the phone telling Goodell what to do.