Only some vague, wispy area to touch which one hopes will do what they want but will, as time and experience has shown, fail at every given opportunity.
Actually what experience has shown is that Apple gets Touch right, every time.
For years Apple has the only laptop trackpad I could stand using.
For years now Apple has made touch the singular way people interact with mobile devices - one that work at every opportunity, not fail...
Apple has also been doing an excellent job of integrating haptic feedback with touch, on both the Apple Watch and newer trackpads along with the iPhone.
So all signs point to a haptic-feedback touch bar with great responsiveness and accuracy... certainly not the grim picture you paint.
I personally am really looking forward to having function keys I never used replaced by clean commands in most apps I certainly will use. It's like gaining an extra row of keys, not losing anything.