I don't disagree with that but the QBs in the AFC are better than the QBs in the AFC when Brady played. Plus I think the division will be more difficult than what the AFC East provided Brady especially with Harbaugh in the mix. The AFC is just absolutely stacked with talent and it's going to be tough to come out of that conference year in and year out: Mahomes, Burrow, Allen, Herbert, Stroud, Lamar, Richardson and to a lesser degree Tua and Lawrence. I mean half the teams in the conference have a good QB and 5 have elite (Bills, Chiefs, Bengals, Texans and Ravens).
The thing is Mahomes probably has 12 years to win 4 to catch Brady. I doubt he'll have the longevity that Brady had and I doubt without his mobility he'll be as good as he is now (same with Allen and that's especially true with Lamar; imo once Lamar doesn't have elite speed he'll be cooked). Brady really only had Manning and Big Ben in the AFC. By the time won his second Superbowl to the time he left New England the only 4 QBs that were in the Superbowl on the AFC side were Brady, Manning, Big Ben and Flacco. Hell even since that second SB you can add only Mahomes and Burrow. 21 years and only 6 QB made it. 19 years and only 4 QBs.