Jeff Fisher wasn’t fired at Tennessee. He actually left on his own accord and went to the Rams.
Then his future franchise QB Bradford suffered back to back season ending ACL tears. Then he got hit with having to pack up a football team a second time and move across country. He built the Rams roster to what it is now. He saw how special Goff was and drafted him. He built the Rams today into what they are. McVay is offensive minded and has them playing great. One could argue that Fisher was an OC away.
I lived in LA when USC hired Pete Carroll. USC fans said the same exact things about that hire. He built an amazing college staff around him. Kiffin, Sarkisian, Orgeron, Norm Chow, Tim Davis, Nick Holt, Ken Norton Jr, to name a few.
Not saying Fisher would be Pete Carroll in college...just saying the NFL experience as a CEO was transitioned great because he knew how to build a team and staff.