Keep in mind that “linemen” in punt protection are not linemen at all. The vast majority of them are LBs with a backup TE or two thrown in, and then your wings are typically safeties or RBs. None of them have any training in run blocking, and they’re taught to kick-slide for punt pro working backwards for 2-3 steps in college and that’s probably all the technical training they get in blocking.
Now, with numbers up, you’d hope they could lay a hat on someone, but this is why if I’m an STC, I’m never making my fake a run play. They just don’t have any technical training in it. Make it a pass play where your guys are at least nominally trained to kick slide, sneak a wing or the PP out the side for a screen while running the gunner diagonally away from there toward the opposite corner and you give yourself a chance. Never ever call a running punt fake unless you need like 6 inches, and even then, either pass the ball or punt it.
My take is that it’s coaching malpractice to have that play installed, and I get why the players audibles to it, but that never should have been in the playbook to begin with.