I get what you're saying. Watch out for Georgia, watch out for Alabama (at least under Saban), watch out for LSU. Eventually, hopefully, watch out for Tennessee again. It's hard to get out from under them.
Even still, Miami has gone to the ACC Championship game 1 time since they've been in the ACC in 2004.
Florida has gone to the SEC Championship game 6 times under three different head coaches in that same time period.
This is to further demonstrate that the football problems in Miami are not the coaches, the talent, or the conference that they play in. The problems are at the University and behind-the-scenes. You can't compete and win championships if your program isn't even set up for success. There's a lot of work to do at Miami to even get them to where they can just worry about competing. It's a rebuild job. A job that will take multiple years and a lot of time and dedication. Kiffin's gonna sign up for that?