Sounds about the same as my own, even though I only started out in early 5.2. pugging from 5.3 occasionally up till early 6.1. I did not PF as often because I tend to avoid it, but never once in my life have seen these ‘attacked & harassed’ over using GCD heals. From prog to clears; one of my PF had -both- of the healers overhealing each other in Emerald EX back in 5.4 & nobody bats an eye nor mentioned it. Same to that Hydaelyn EX back in 6.0. Asp Helios 4 times in a row & rare Fall Malefic casts? Nope, not a word been said.
It’s certainly amusing to see ToS suddenly turning invisible in such anecdotes.