Touch buttons also suck for the sight-disabled, meaning the range of fully blind up through my grandpa who's getting on in years and can't see like he used to. Physical buttons are an accessibility enabler.
Funnily, this is one of the things that makes me inclined to believe a rumor (that Apple pulled iMac and/or Mac Pro refreshes from the Touchbar MBP event at the very last minute following the strength of the Surface Studio event the day before):
There was a -lot- of filler (25+ mins) before the announcement of the MBP, and a lot of it was lack lustre. Interestingly, several minutes were applauding Apple for its efforts in accessibility...
... only to immediately announce the huge accessibility problem that is the Touch Bar.
