While Bledsoe knows that Brady is 10x better than him in his heart of hearts, Bledsoe can't name Brady as GOAT because that would be a public admission Brady deserved to take his job.
Warped thinking but 2001 SB footage revealed that Drew wasn't exactly doing jumps for joy when an exuberant Brady was hitting him on the shoulder pads saying "we did it, we did it"!
No worries, Drew can use the sour grapes for his winery.