Earlier quoted context omitted.
Did this happen in response to minimum wage?
Yes, because if there were no minimum wage, they would simply pay employees less and forget about the touchscreens.
If McDonalds could pay less, not train employees, have them touch buttons accurately, and customers enjoyed interacting with those people; then, and only then is what you have said close to truthful.
What you have proposed is that the internet wouldn't send electronic bits if we just paid mail carriers more.