I didn't get that at all.
The article says he did struggle occasionally when Goff first had to read 0 coverage, but that's about it.
Goff and McVay had differences on play calling and game plan.
We've seen this before.
Take Rogers for example. He's much happier and even improved this past year, due to the fact that he has input in what plays he likes to run.
As far as putting in the time? The article said he did.
As far as Goff not having thick skin. It did seem that Goff didn't react well to the yelling and constant criticism.
The article talked about how Lafleur and Taylor were a good buffer between Goff and McVay.
Having 5 qb coaches in 5 years didn't exactly help.
Regarding coverages (not just talking about cover zero):
"Goff struggled to recognize coverage disguises and didn't consistently identify coverage post snap as the play developed. When a defense ran Cover Zero with no safeties deep, his decision-making process often didn't happen quickly enough to hit the big play."
Regarding putting in the time (not a good look for the backup to put in more time when the starter was struggling - different story if he was having more success):
"With a hired nutritionist, throwing coach and personal trainer outside of the Rams' facility, Goff put in the work required of most starting NFL quarterbacks. But when compared to Wolford, whom some refer to as Baby Brees, it fell short.
Wolford arrived early during the week for practices -- 6:30 a.m. -- and stayed late, even when he was on the practice squad. "Just a different animal," a league source said."
This isn't good:
"The Arizona-Seattle weeks, those were our best weeks of practices," another team source said. "The confidence of the team was high."
And the most damning of all:
Throughout the building, tension rose in regard to McVay's handling of Goff, whom some thought the coach did not hold accountable like others.
"We get our ass chewed out for f---ups," a team source said. "But the stuff with the quarterback gets swept under the rug."
With this last quote - on the one hand you have Goff feeling like McVay is too hard on him, while at least some of the players didn't think McVay was hard enough on him.