[canadianwriter]

Even in music it is not that helpful to be honest. Eg. most live shows you tune the instruments to the piano. If the piano is slightly out of tune, someone with perfect pitch will be annoyed the entire time trying to deal with that while everyone else hears a perfectly good concert.

having good relative pitch is way more useful.

Many musicians with perfect pitch have also been really obsessed with tuning in their recordings and it sets off a lot of anxiety for them cause they can hear themselves the smallest amount off, when no one else can and the performance makes it a perfect take to use in the song.

It can be helpful I guess for composing, but as someone who does composing, it's not hard to just tinker with a piano to get the notes I want, no need to be able to perfectly hum them when I think of them.