Clemson isn't mad about SMU, Clemson just wants to find a way to be paid on par with national-caliber schools.
As a lifelong Clemson fan, I hope we stay in the ACC, and that the league gets a better TV deal. And that's really the only problem. The ACC has national brands (you could find some Clemson, FSU, Miami, UNC, Duke sportsgear at just about any store in America) yet the league locked in a lower payout TV deal until 2036 that doesn't even account for inflation.
I'm not worried about football at Clemson; we will find a way to fund that at championship levels, but the other sports suffer in comparison to our SEC neighbors. I have a friend who umpires college baseball, and he knows the SEC facilities, and food/hospitality they have for the officials are of much higher quality. And that's really where the extra money comes into play. The smaller sports are the big winners from the football TV contracts, and even though Clemson has national titles in soccer and golf, we see those type of sports as getting passed by with huge contracts flowing to our neighbors at Georgia and S. Carolina.
Here's to hoping SMU can win the AAC in your final year there! Congratulations on making it all the way back from the death penalty. It has to feel good, and I've been pulling for you for a long time. Looking forward to visiting Dallas and hosting yall at Clemson.