Kelly brought the program back from the disastrous Davie/Willingham/Weis fiasco.
I certainly give him credit for that. By 2012 he had the program back to respectability and the Alabama thrashing could have faded with at least some major post-season victories (and even close losses) over time. Sadly, that hasn't happened.
He loses BCS/playoff games, major bowl game and the ACC championship be over 2 touchdowns at least...and they don't look that close. If he was even 2-3 in those games with some exciting losses, I'd be inclined to agree with you. He's 0-5 with a butt-whipping every single time. (80% in also-ran bowls has virtually zero significance.)
12 years is long enough. Keep him here until death like JoePa because he's better than Boob/Ty/Chuck? They were a low bar. Time for a change. (And change may be worse initially...but eventually perpetual limbo becomes its own pain.)