I don't have an issue with someone making a distinction between the winningest QB of all time and the most talented QB of all time.
Tom Brady won 7 Super Bowls. Football is not an individual sport. He gets credit for all of those Super Bowls but there's factors that go into it like Beli's defense shutting down the Rams in the Super Bowl and Beli's defense shutting down Peyton Manning's offense in some of those AFC playoff games or Adam kicking a couple wild field goals against the Raiders in the snow or a game winning kick against Carolina in the Super Bowl. It's a team sport.
Brady, his second half against Seattle was perfect. He was incredible in that game. He was incredible in the game against Philly that they lost. He was incredible against the Falcons in the 28-3 comeback. It's a team game. Everyone contributed to the winning to some degree.
Mahomes might have more talent and I think he does but he won't be the 'GOAT' until he gets up to 4 or 5 Super Bowls because that's how most people are going to look at it, even if rings are supposed to be about the team.