On the topic of perfect pitch, I see it as more of a "gift" that someone is born with, or develops at an early age, not something that MEs need to focus on. That said, I've got good relative pitch, a skill I've retained for decades, it does have its uses at times.
I've got good relative pitch too, but perfect pitch open up your ears in a totally different way.
It's hard to explain, I think the only way is to try it for yourself. So don't judge it before you tried it.
The "gift" and "born with" thing is partly an old myth and misconception.
Cheers,
Herbeck