Without ever talking to any of them, I believe McVay's maturation process is a two headed blade, I think he did this with Goff too, Jared helped him get to a Super Bowl and they both had a lot of success teaming together, but McVay realized he could not win the SB with Goff and he struggled until he finally said you need to go, I think the same thing is happening with Snead, McVay does not want balance he wants explosion on offense and he wants "young and fast on defense" but it feels like he knows Snead gave him his first shot and he will always be greatful. Like most great coaches they want full control, and they hand pick their GM, the difficult thing about this is, you can develop Martz syndrome, you need a check and balance system. McVay is a football genius on offense, and I feel he has outgrown Snead and instead of going head to head with the guy that gave him his first shot, he says he will go to the booth. Just my opinion.