I don't disagree. But his OL did win a Super Bowl. So that year's line showed a lot of growth in the season. They really came a long way in stunts for example, as they were shit at it early in the season. But yes he had to go, there were plenty of reasons for that firing.
Looking at the OL I think one truth is that it's held McVay back more than any other unit. Also it's been dependent on player additions from outside the organization. Imagine if he had not signed Whit as a FA for example. McVay might be looked at a lot differently right now, with maybe no Super Bowl appearances and losses in the playoffs. Because we don't seem to be very good at evaluating these guys from college on into the draft. And we don't seem to be very good at evaluating them at times even on the roster when they keep trotting guys out there who haven't been able to consistently produce like Demby, Boom (early on was very ugly even though he has improved), Evans, etc.
What's funny is look how McVay is with his WRs. That's his little project group. That feels to me at least where a large amount of his focus is, that and QB. He is not patient with any of those guys and in fact has gone through both parts of the roster with a battle axe when he feels they're not good enough. But for some reason with OL he hasn't held the same standards and it's honestly his fault that unit has given him those problems.
But on the flipside the top OL coaches are worth their weight in gold. I like that McVay at least tried to steal a guy who was under a great coach in New England. But up until the point where you know you found that gem you gotta keep digging.
Lastly I'd like to see the Rams overhaul their entire organization's evaluation of OL. This might be what McVay is doing now idk. Because we have to start with good drafting of these guys for the pipeline if we want to operate that way. It's a big problem that we seem to be incapable of drafting those positions well.