I personally hate them for most of the same reasons that you like them.
First off they are slow to use. Part of that is because things are buried in menus, and part is from the annoying up-selling screens. Using them take 4-5 times longer in my experience. I don’t go there often enough to justify it.
Second, if you are paying cash, you still have to wait in line and see an actual human. Might as well just order with them.
Third, I am nearsighted but I have good glasses. The small font on the menu boards don’t bother me. I would rather see the entire thing while in line. Make my decision and order to a person.