With regard to Dobbs, what Florida does or does not have has nothing to do with Dobbs. And yes, I'd be more than happy to have a Qb who wasn't an embarrassment.
As for the Florida thing, I think it's because some people (a) choose to look beyond the last 10 years and (b) would disagree about Florida having the better team.
There are some who believe Tennessee had the better team during the Spurrier era most every season. There are some people who believe Tennessee had the better team several times in the last 10 years but Fulmer is an idiot, Dooley is an idiot, Hunter got hurt, Sal Sunseri, Florida played like the 93 Cowboys that day, (insert whatever reason you want here) for the reason Tennessee lost despite having the better team.
There are games where Florida hung 60 and I've heard Tennessee should have won.
So, I am not sure how many believe Florida has generally had the better team.
Also, most eventually win even though they don't have the better team. Florida-Georgia 2014 is a good example. Going 10 years is a long time, whether tennessee was always the underdog or not