I don’t agree with this. High ground control is still extremely important on maps like Numbani and Gibraltar, so Winston will be a favored pick on maps that have a lot of high ground. Maps like Junkertown, or even point A Eichenwalde defense, Orisa will be favored. Enforced 2/2/2 won’t have that much of an impact on the main tank role.
I do bring up Roadhog, because even though he is a tank, he doesn’t have the peel potential like the other off-tanks, and has no way of protecting his teammates. Hog has always been best in a 3-tank lineup.