I think it's since people can order groceries online and have them delivered by motorbike.
There's this really loud clanging sort of chiming noise (like a phone ringing but even more intrusive) just going on in the background more or less constantly in my Sainsburys Local. What is it, why doesn't anyone turn it off?
Combined with the 4 self service tills all barking out their instructions continuously, shopping in there is a really nerve-grating experience.
Plus the staff yelling at each other to make themselves heard over the cacophony!