Jobs like these are not only FT, but they also traditionally provided PT employment for people, including students, who weren't yet skilled/qualified to apply for others.
Automation slashes these jobs.
I live in France and there is a motorway toll by my town. The motorway company used to employ several hundred people to man the booths in our region, many of them women looking for PT work, and in the summer they were perfect for students. Sure, it's dull and was hot in summer, but they were often for top-up income. One of my neighbours worked there and was laid off when they automated. She hasn't found another job with flexible hours that allows her to work while caring for an ill family member. She liked her job and the brief exchanges with drivers. It's a bit condescending to decree that such jobs should vanish in favour of more skilled ones, TBH.
Now it's all automated. There's no cheery voice, no information for people who're lost and need directions, and when the automated system fails, there's a huge queue and no one to sort the problem out.
I can't really see why that is progress.
So, no, I don't use self-service unless I am in a raging hurry and the checkout queue is too long.