If Brady's winning was solely based on the fact that he was on good teams, then more people would have been able to predict his success on those teams prior to the season. After winning, teams look great. Hindsight is 20/20. That is not Occam's razor, Captain Hindsight.
Of course, after Brady won a couple, expectations changed. Brady & Belichick were considered favorites almost every year they were together after year three of their partnership. They were so successful, that after Brady left, people questioned who was more integral to the Pats success. After Brady took the Bucs to the Superbowl and the Pats reverted to the pre-Brady and Browns Belichik level (SEVEN of EIGHT years WITHOUT Brady on his team, Belichick is UNDER .500).
Brady joined an average Bucs teams and elevated them from a playoff contender to World champions. A healthy 2/3 of teams in the league could be classed as playoff contenders. Only a handful of teams are considered Superbowl contenders. At the start of the abbreviated COVID preseason, very few included the Bucs in that conversation.
In fact, Brady could have joined more than half the teams in the league, brought along Gronk, Antonio Brown and recruited Leonard Fournette and would very likely had the same success. What makes that even more special is that it was a COVID shortened season.
Occcam's razor is clear. Brady joining a team elevates teams from average to SB contenders. Though you have all the zeal of a Creationist arguing against Evolution, you share the same quality of arguments.
In regard to the complexity of the Patriots offense, you clearly don't know what you are talking about.
https://www.clnsmedia.com/patriots-offense-learns-one-complex-playbooks-nfl/
https://boston.cbslocal.com/2020/05/21/nfl-dolphins-chad-oshea-patriots-offense-too-complicated/
https://www.si.com/nfl/2016/01/21/tom-brady-patriots-charlie-weis-option-routes
https://nesn.com/2020/10/ex-patriots-receiver-raises-valid-criticism-about-patriots-offense/
QBs averaged 40 turnover worthy plays in their first year of Arian's offense. Brady had only 12 with a COVID shortened preseason. I tried to figure out how your comment on Blanda was relevant to that. Your comment makes no sense.
Most teammates will support their QB. That is true. However, the very specific comments many of Peyton's teammates have made about him and even more of Brady's teammates have said about him are not the same kind of comments other players make about their QBs. Nearly every single REPUTABLE analyst considers Brady the GOAT based on his incredible success.
You postulate that he is not because he has been on great teams and because of coaching. Brady has had a winning season in EVERY season he has played. As a starter
20/20 winning seasons, 19/20 making playoffs, 14 Conference Championships, 10 SB appearances, 7 WORLD CHAMPIONSHIPS
Belichick without Brady, 8 years as Head Coach. 2 winning seasons, 1 Playoff appearance, 1 wildcard win.
Arians without Brady, we'll say 7 years as HC without Brady (including 12 game Indie season), 4/7 winning seasons, 1-2 in the playoffs.
When you throw out a bunch of BS statements, why should I or anyone else take you seriously?
TLDR
Playoffs
Brady with (BB and BA) 34-11
BB without Brady 1-1
BA without Brady 1-2
Lol, that is the reason every RESPECTABLE analyst and nearly every former player and coach considers him the GOAT.
OCCAM's razor: When Brady is on a team, the team goes from average to SB contender, making him the most impactful player in NFL history.
Your OPINION that it is because he was on great teams and had great coaching. Prove it! LOL. You can't.