I used to like them for this at least, but now my local store has someone come talk to you and do the whole “did you find everything OK?” and loyalty card conversation while the other machines in the background need their attention and people are getting impatient. if you have headphones in they’ll literally just keep trying and wait until you remove them to say “yep, nope, no thank you, don’t need the pamphlet, thanks, nope, yep all good”.
I avoid them entirely now, there’s no value and only drawbacks. I’ll wait in the long human checker line as long as I need. the human doesn’t stop scanning randomly half way through the slow scan, bag, wait loop and start emitting loud alarm noises for an employee to come over (sometime in the next 10 minutes) and be forced to review a video of your whole self-checkout process titled “CHECK THOROUGHLY FOR THEFT” before they can unlock the machine and stop the alarm.