Just for future in case anyone is interested. I had a small bolt in my tyre (M5ish), plugged with a super cheap amazon kit (like a tubeless repair kit) as it was near sidewall and they would have wrote the tyre off. Over 12months and it hasn't lost any pressure at all. I can recommend them from experience.
The stuff this guy jammed in was like pink putty/bubblegum (maybe it was!).
I am far too cautious/scared/often searching in Google to validate my concerns to run it like that for any amount of time and would constantly worry especially with my kid and wife in the car.
Just for future in case anyone is interested. I had a small bolt in my tyre (M5ish), plugged with a super cheap amazon kit (like a tubeless repair kit) as it was near sidewall and they would have wrote the tyre off. Over 12months and it hasn't lost any pressure at all. I can recommend them from experience.