Hitting a function button is not "typing" in any real sense anyway, use being so relatively infrequent. Can you really hit F8 consistently, without looking?
Maybe the doctrinaire solution would be to delete the function keys, if "thou shalt not look at keys" is the ultimate commandment. But that's incompatible with legacy needs.
Back in the pre-GUI days when use of the function keys was far more prevalent, software would sometimes ship with cardboard overlays to indicate which key did what action. The touchbar is bringing that old idea into the 21st century.
I would have preferred they scaled it back and include physical Esc and power keys on either side, but in other ways it presents a real improvement in computing UX which is too rare these days.