This is such a non-issue.
(1) The talking heads act as if McBride is dying to save his redshirt...all the super-type-A freshmen I ever knew were dying to get a chance to play, and really really didn't want to redshirt. Feels kind of like being told you have to repeat 7th grade because it's good for you. So I doubt Will McBride's feelings were hurt (his parents, well, they may have felt a bit different).
(2) It was only 3 plays in the first half of this game, but how many more plays will it be in the 2nd half? Guarantano sure doesn't look good for another 30-50 offensive plays. And beyond tonight, what about next week? The week after? After that? Who thinks Josh will be 100% healthy the rest of the season? Really?
Bottom line is, the 2nd string QB is next up, and almost every 2nd string QB in college football gets in from time to time. These mouth-breathing talking heads on TV are idiots piling on a "dead man walking" coach.
Non-issue.