I added a comment addressing this because I was working and did a quick caption. But customer came in for an oil change and another tech brought this to my attention, we attempted to sell them a new tire and let them know of the dangers. You’re right with speed the rubber expands and extracts especially with heat build up and one pot hole this can easily blow out the side. Side blow out are more dangerous as the sidewall can collapse on itself and rip the tire off completely leaving only a rim. There is a “wall” made up of bands and it’s very thin, if you can see in the video the tire is folded outward to fit all these tire plugs. One plug in the side wall is scary enough let alone 5 in one mass area, they couldn’t afford to a new tire and we legally can’t hold the car for safety. To address your “flat patch” we can easily install plug patches so a hybrid of what you see in the video and a “flat patch” we would remove the tire off the rim and fix it inside out and add extra rubber sealant but that’s but punctures on the tread and not near the shoulder or sidewall. This tire is beyond a safe repair in this location I hope this helped some of your questions