Uh...no.
Fulmer was the OC in 1989, '90, '91 and '92.
1989 - 28.8 pts/game 24th of 106
1990 - 35.8 pts/game 11th of 107
1991 - 29.3 pts/game 21st of 107
1992 - 28.9 pts/game 16th of 107
Spurrier became HC at UF in 1990 and us old guys remember the Fun n Gun that he developed in the USFL and eventually brought to Gainesville, it was new to SEC ball, nobody was doing anything like that. Fulmer went 2-1 against the HBC as an OC.
1990 - 35.2 yds/game
1991 - 32.4 yds/game
1992 - 24.2 yds/game
In 1989, in Fulmer's first year as OC, Tennessee started the season unranked, went 11-1, won the SEC and finished ranked 5th in the AP. The most wins in a season of Johnny Majors' coaching tenure. The only Majors led team to finish ranked higher was the '85 team that beat Miami in the Sugar Bowl to finish 4th in the AP.
As the OC he was 38-9-2.
1 top 5 finish, 1 top 10 finish, 2 top 15 finishes with Majors on the sideline and Fulmer in the booth as OC.
Obviously the game has changed a lot with the up tempo/shotgun/spread etc...and of course with Jones and Co. they do that stuff...you'd think that would result in more points but it hasn't. Butch and Debord are even more conservative than Fulmer as an OC, maybe if they had Andy Kelly they'd do something different.
Certainly, by the end of Fulmer's tenure, maybe things had gotten stale, fallen behind...but these coaches over there right now, well...they haven't earned the right to be compared to Fulmer and I'd bet they'd tell you that themselves. They have a long way to go and I hope for the best.