My stepfather was in the tire business for decades (the kind of guy who would see you drive up in a brand new car and greet you with “so, been parking too close to the curb, eh?”), and he insisted that nobody in his immediate family would be allowed to accept a plug repair. If I had a flat “fixed” by anyone else and he found out it was plugged rather than patched, he’d march me back there and insist they either re-do the job or pay to replace the tire.