No one would ever be able to be at the same level without Brady, but I believe that Belichick had been succession planning for a smoother transition into the post-Brady era and Kraft meddled with both that and with the rebuild effort, leaving the cupboards bare.
You know what else left the cupboards bare? Belichick's drafting. Here's every single offensive player he drafted in his last seven years:
4th round, 2023 - Jake Andrews
4th round, 2023 - Sidy Sow
5th round, 2023 - Antonio Mafi
6th round, 2023 - Kayshon Boutte
6th round, 2023 - Demario Douglas
1st round, 2022 - Cole Strange
2nd round, 2022 - Tyquan Thornton
4th round, 2022 - Pierre Strong
4th round, 2022 - Bailey Zappe
6th round, 2022 - Kevin Harris
7th round, 2022 - Chasen Hines
7th round, 2022 - Andrew Stuber
1st round, 2021 - Mac Jones
4th round, 2021 - Rhamondre Stevenson
6th round, 2021 - William Sherman
7th round 2021 - Tre Nixon
3rd round, 2020 - Devin Asiasi
3rd round, 2020 - Dalton Keene
6th round, 2020 - Michael Onwenu
6th round, 2020 - Justin Herron
7th round, 2020 - Dustin Woodard
1st round, 2019 - N'Keal Harry
3rd round, 2019 - Damian Harris
3rd round, 2019 - Yodny Cajuste
4th round, 2019 - Hjalte Froholdt
4th round , 2019 - Jarrett Stidham
1st round, 2018 - Isaiah Wynn
1st round, 2018 - Sony Michel
6th round, 2018 - Braxton Berrios
7th round, 2018 - Danny Etling
7th round, 2018 - Ryan Izzo
6th round, 2017 - Conor McDermott
You can't do
that and then claim, "Oh, but the owner screwed up the rebuild." Ownership did NOT pick Cole Strange in the friggin' first round - Bill did. That's revisionist history bull.