Um, no. There are many other categories of people who have issues with self-checkouts. Like anyone who's legally or by the store's rules due a discount or tax waiver (people with Indigenous status aren't required to pay sales taxes in some jurisdictions, for instance), since the software often fails to account for these. Anyone paying cash. Anyone who knows anything at all about UI design or has wrestled with a self-checkout that just doesn't function properly.
I'll wait in line rather than deal with a machine that's broken by design, thanks. Fortunately, the stores around here mostly have reasonable staffing practices, so the wait isn't long unless some idiot tries to price-match against a flyer or something else weird and unusual.