I have had to plug two Pro Ones with Dynaplug’s. Ill continue using the tire if it keeps the tire pressure. On weekdays, the bike is on the trainer, on the weekend it goes outside. If, by the time the weekend comes and the tire is completely flat, its usually an indication that the tire has a pretty big hole.
I had to replace a pro one because it kept leaking at the same spot no matter how many times I plug it / add more sealant. At that point, its better to replace it than waste plugs.
Ive used plugged pro ones for around 3000 km after being repaired.
So yes, plugging it can extend the life of the tire so long as it still seals at the damaged area. If you have the time, add a tube tire patch from the inside for additional peace of mind.
Hope it helps.