[shantly]

Maybe they're A/B testing or they've changed. The ones I've seen took you through a screen or two of options and such before adding whatever you'd selected to your order, with the "just friggin' add it" button far less obviously placed than it should have been. Also took some thinking to figure out where certain things might be in the menu.

[EDIT] My experience is muddling through the process once the first time I saw one just to see what it was like, but it definitely took several times as long as just walking up and ordering (and all I ordered was a coffee), and watching my wife try to use one on a family trip, spend about ~2x as long as it would have taken to just order at the counter, curse at it, give up, walk over and order at the counter.