Perfect pitch is a hindrance because it is an inability to perceive relative pitch.

However relative pitch people can hear perfect pitch with training. I can do this for the most part. I typically always start singing in the same key after years of practice and base my pitch off of that. At this point it's automatic for the most part. I always start my songs on middle G. And Bs are extremely distinct.

But I agree the obsession with perfect pitch on here is weird. I'm guessing someone saw a friend do a parlour trick and is convinced this is some great advantage. It's not.