I have lost count of the number of times I had to plug a tire, probably at least 15-20 times in 35+ years of driving. All the plugs lasted the life of the tire; never had a single one fail. I don't recall hearing any stories of plugs failing from anyone come to think of it.
I actually carry a plug kit in all my vehicles (tools, rubber/rope plugs, and rubber cement). Most times, you can pull out the foreign object, ream the hole, and insert the plug without losing much air.
I can think of one time I had to replace a tire, and it was also a newish tire. Cut near the sidewall that was not suitable for a plug or a patch. That's really the only time you have no choice.
The puncture shown here is a perfect scenario for a plug and it would give me zero concern.
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