the term " pro " appeared (by my count) 56 times in the apple press release. Pro to me is now just a marketing term.

Apple already has a giant touchpad. That's the sensible place to put the touchbar instead of breaking the Function keys.

Now that I think about this more, if you are right, then why don't the Mac Pros come with a touchbar keyboard? Video and photo editing are probably the primary uses for the Mac Pro.

That's fair, although when I used PS I used the function keys a lot.

Which is fair — film, music, design, photography have been the core pro markets for Apple for much longer than developers have been — Final Cut, Logic Pro and the defunct Aperture are clear proof of that. The Touch Bar kind of became the straw that broke the camel's back for a lot of people, but this prioritisation at the hardware level is much older, and much more pervasive than that.

That sort of creative also gets much more benefit from the four Thunderbolt ports than developers do (we mostly use them as inconvenient USB and/or display ports, and AFAICT Thunderbolt is borderline irrelevant. Same as with Firewire back in the day). As much as I enjoy using my iMac 5k for programming, it's when I use it for Lightroom that I really get a real benefit from it. Most of my development work doesn't benefit that much from an SSD (when I wrote C++ professionally, that was a different story...), but by gods it makes a difference when I try to edit 4k video.

They're Pro because they block out the noise surrounding you when you're trying to work in a godawful open-plan office