I blame this mostly on Apple's human interface guidelines:
https://developer.apple.com/design/human-interface-guideline...
Scroll down to "Design Considerations": "Use the Touch Bar as an extension of the keyboard and trackpad, not as a display."
But what I really want is for the touch bar to be a display and input device for things normally elsewhere: time, date, maybe CPU usage, etc. This to me is not a hardware problem, but one with policy.
Edit: what I really want is for Apple to let people experiment with new hardeware, rather than impose their vision on how it should be used. Unlike many others I don't actually hate the touch bar and see some potentials, but not if Apple restricts its use.