Then don't call it pro.

I've seen many professional programmers typing with two fingers while looking at the keyboard.

I do this and even though I'm not a touch typist, there is a sense of position information about keys in my mind. However with the touch bar (I'm assuming, having never used one for longer than 2 minutes), even that sense will not help.

Is there really a large overlap between people looking down at the keyboard, and people buying a professional machine?

I think so. One of the best programmers I know types quite slowly, often glancing down. He's the author of some very popular open-source work. Many thousands of programmers build on his code daily.