Hm, the fact that he was mentioned or referenced does not prove that his role was downplayed, a quick search of the interwebs shows:

- 2018 Oscars: Despite his massive influence on Coco, none of the filmmakers mentioned him by name in their acceptance speeches for Best Animated Feature.

- Film Premieres: Lasseter did not attend the 2018 premiere of Incredibles 2, a film he was heavily involved in, further signaling his detachment from official company events.

His involvement in both those films was as member of the brain trust. The brain trust consists of all their prior directors.

Go back through their many Oscar wins and they don’t thank the brain trust members individually. They don’t thank their department heads either who are more involved than any members of the brain trust are.

I think you are the one who is perhaps overplaying his involvement in those specific films without a concrete understanding of what his contributions were.