When I'm wearing my cynic hat, the touch bar is the beginning of a plot to replace our physical keys with another screen with an image of keys. The 2030 MacBook will basically be two iPads taped together
[1] https://www.google.com/url?sa=t&source=web&rct=j&url=%23&ved...
If done right, it is completely possible. But the old neck beards will certainly have a conniption fit.
If there were little localized bumps every time my fingers moved outside the area of a given letter, and if the keys could tell the difference between resting, setting, and actually typing, then I'm not sure there would be any problem.