When has Apple used "there's a keyboard" as a rationale for not having touch screens on the laptops? I'd suspect their objection is more "you'd get fingerprints on the glass", but I doubt they've made that public either.

Most users can't touch-type the function keys, so having to look isn't much of a departure for the vast majority of their audience.

Surely "professional software" is anything that people use in their profession to get paid for? cf the New Yorker covers drawn on iPhones, Gorillaz producing an album (mostly) on an iPad, etc.

I don't? Huh. News to me!