There's also the bias (accurate or not) of "most people are bad drivers, but I'm better". Beating the average only beats the average. It improves things across the board (and that's awesome), but people who are particularly careful or skilled will balk until it's perceived as better than they are.
Pick something you pay extra attention to. Now imagine being informed you can't do that any more, you have to take what [this robot] does for you. Also remember all the terrible UI changes in software that have been done for a majority instead of your use-case.
Reluctance until it's substantially better seems reasonable to me. Somewhat unfortunate on a species level, but not for many individuals.
Pick something you pay extra attention to. Now imagine being informed you can't do that any more, you have to take what [this robot] does for you. Also remember all the terrible UI changes in software that have been done for a majority instead of your use-case.
Reluctance until it's substantially better seems reasonable to me. Somewhat unfortunate on a species level, but not for many individuals.