I mean if you think about other professions that use Macbook Pro they don't need it either. Are video professionals using it to scrub through video? Nope. For any audio professional it's useless. No one who is serious about their profession would use it.

I’m serious about my profession and I use it daily. Wonder what that says about me.

Please tell me what it can do that hot keys and just generally knowing a program can't do? I'm honestly interested.

I'd be curious to know what portion of their user base for the Pro series are developers. Anecdotally, quite a lot of devs seems to use Macs; but I have no idea what that fraction is, relative to the rest of their market.