My sympathy. I know very well the difference between someone helpfully pointing something out and an a**hole. I've had enough of the latter as bosses.

I had a friend, now long since deceased, who had the gift of pointing out deficiencies at high-end hotel and restaurant service in such a way that they fell over themselves to THANK him! He got comped meals, rooms, and for all I know more. He was very welcome the next times they saw him, too. He understood my social deficiencies and found them amusing in a good way (hard to believe). I miss that rascal!