I will say the "Gen Z stare" is an actual phenomena that happens irl. I just got it at the deli counter last weekend. I was trying to order a tuna sandwich and just got stared at back with the most blank deadpan unmoving expression, he didn't do anything to confirm or approve my order (or start making it). When I got home I told my partner about it and they laughed, "oh you got the 'Gen Z stare!' and so I googled it and that is EXACTLY what happened!
Here are few good examples of it: https://www.tiktok.com/@dantejamees/video/752596765491436263...