As others have said, the issue with the touch bar right now is that it seems like a gimmicky add-on designed to sell laptops, as opposed to being truly functional. The demo during the keynote did nothing to change my opinion. I felt sorry for the poor woman trying to demo FCPX timeline scrolling with the touch bar. A two finger swipe on the trackpad works better and doesn't require that the user look down. The problem with the touch bar is that it doesn't yet demonstrate better efficiency than the existing alternatives. Most of us who do things like edit video for a living are keyboard people. Once you learn the shortcuts, it's hard to beat the keyboard. If apple wants to demonstrate the benefits of the touch bar, it needs to involve customized, multi-step buttons for complex tasks. Select a clip in the timeline, copy all attributes to it, switch the audio channel layout from stereo to mono, disable tracks 3 & 4, etc., all in one programmable touch bar button. And even then, I can still do most of that quickly using the keyboard.
I also found it really strange that the first demos of the touch bar in action featured basic apps like email, and Messages. These are obviously standard apps but who buys a $3000 laptop for messages? Predictive type in a word processor requires that I look down at the keyboard while typing. Most people don't do that.
I think the touch bar cn legitimately be useful, when developers get a hold of it and figure it out. But right now it feels like the watch, in that apple doesn't really understand how to put it to good use yet. Apple used to be masters of I/O design. This feels like something other parties will have to make useful.
But again, touch bar will only be on my laptop, and my desktop will be my main computer. So it's not going to dramatically change my workflow because I will be editing on a desktop 85% of the time. If the new macbook pro is somebody's only computer, I could see that person developing some good habits that improve their workflow. But for me, I see it as something I'm unlikely to incorporate well until they offer a standalone keyboard version.