As an early 90’s millennial, I’ve never noticed a “gen z stare” as described in news articles like a “blank face that shows lack of social skill or ability to think”. The only times I’ve witnessed it happen and seen the older person accuse them of “gen z stare” is when the older person says something off hand or dumb but isn’t self aware enough to realize they’re being weird. Hell, I’ve given people a blank face countless times because I was taught it was better to say nothing at all sometimes. Especially when it came to talking to older people at work.
I remember when I was 16, some middle aged guy at work accused me of having no personality. In reality, I kept all conversations short as possible with him (like almost everyone in the store) because they were casually racist and misogynistic.


Again. You think someone should be able to figure it out with the tiniest effort. But it really may not be so obvious to someone who doesn’t know what you know.
You are not alone here - all people struggle to truly visualize the mind of another person who doesn’t know what they themselves know. Sure you know whatever it is 1000 times over. But the customer does not, and they may have a totally different 1000 things on their mind.
People don’t want to take a guess when they can just ask. If you are in an area where customers can address you, you are there to help them. Why should they stop and guess to spare you effort? It is unreasonable to get pissed off by this.