I like self check out if I have just a few items. If I have a basket full I hate self check out as a checker can do it must faster than I can. I no longer shop at Walmart due to this. I shop at HEB here in Texas. In the past I shopped at both. Oddly I did shop at Walmart today as I needed some automotive purchases. The only time I go to Walmart is for something HEB does not have.
HEB has their own nightmare system they don't monitor very well, or they refuse to deal with the thieves. They have a pre-scan system that allows customers to take their carts to a kiosk in self-checkout, scan their phones, and make a payment. This is based on the theory that every item in their cart has been scanned into their smartphones. On more than one occasion I've seen carts filled with multi-packs of prime grade steaks and meats, and I know damn well they didn't scan all of those items. Maybe one for every three or four packages.
Being a person who Virtue Signals for a living, I would never get caught dead in Walmart, but I know what you mean.