I was very high on Goff coming out. He had great accuracy and poise. He was starting in the PAC12 as an 18 year old, and playing well. He was in the Super Bowl in his 3rd year, Pro Bowl in his 2nd.
But, he took a lot of hits in McVay's offense in LA. By year 4, Goff was checking down more. His sack % went down, but so did his yards per attempt. That's when he got on the wrong side of McVay and you began to hear questions about his toughness. In 2020 (year 5), Goff broke his thumb on his throwing hand late in the year in a loss vs Seattle. The backup led the Rams to victory in the last game of the regular season, clinching the playoffs.
In the wildcard game vs Seattle, Goff replaced the backup and the Rams won. Goff started and played the entire game in the divisional round loss in Green Bay.
But by then, McVay and Goff's relationship had been fractured. The Rams swapped with the Lions, sending Matt Stafford to LA. Stafford had the reputation for standing in the pocket to get the ball downfield regardless of the punishment.
Fast forward to 2022, and Goff's sack % is cut nearly in half from the year before. And Goff's yards/completion, TDs, and QB rating goes up. And does the Lions victory total. It's not a mystery. Protect your QB and you have a chance to win games in the NFL.