

Similarly, I find it slightly annoying when you thank a cashier and they respond by saying you’re welcome. This exchange was purely transactional (I paid for my items and you did your job), so please don’t imply that you did me some sort of personal favor. But like you, I won’t say anything about it to the cashier because their job is already hard enough.
When you thank a cashier, it’s just the standard polite way to close the interaction and you’re not actually expressing gratitude to them for simply doing their job. Responding with “you’re welcome” overstates that transactional exchange and implies a debt that doesn’t exist. It comes across as presumptuous.
BUT that’s not their intent, they’re just mindlessly saying “you’re welcome” because that’s how their manager or grandma or someone taught them to respond. So although I find it mildly annoying, it’s not something I’d ever point out to them.