Interesting, I didn’t know perfect pitch was something you could practice. My son was a pretty high level french horn player and from a very early age he had perfect pitch. His teachers always told us it was something you’re born with.
I had an English teacher tell me once that being a good speller was something you were born with (she was not the best speller despite teaching English, and I was pretty good, to be clear). I think saying stuff like that is just how people cope with their own lack of trained skills and how they justify not improving. I've seen similar excuses from people who don't quite feel like learning to solve a rubik's cube.
