When an offense as a mobile QB the defense has to adjust the pass rush and contain.
Sounds simple. Lots of different ways to do it. But mobile QBs create the most damage when they break containment (and either run or pass).
If the DE end bull rushes and goes to the inside of the OL there better be a LB with an outside rush or a spy.
I expect Clemson D to do this. It may look like, at times, that the GT QB has a lot of time to sit in pocket, but in the grand scheme of teams, keeping him contained and giving him an extra second to throw is a better option than letting him break containment.