This is not about making your experience "more enjoyable" it is a direct response to wage increases that directly target these workers and the company responding. Same with the grocery store. Or mobile ordering from Starbucks, or using an ATM. The experience ranges from much better (ATMs) to much, much worse (grocery stores) , but the only way they will "fail" is if everyone forgoes their big mac to go somewhere else…
The customer still has to manually scan every item. Items have to be placed one-by-one in the bagging area. Any small divergence from this, or something out of the ordinary like an Alcohol purchase triggers an exception and requires human intervention. This is enough automation/tech to be annoying but not enough to solve the real problem.
Contrast that with the Amazon Go store which is automated enough that very few would prefer the cashier route even if available.