I can spot a 60Hz display from jiggling the mouse pointer for a second.
I’ve also done side-by-side comparisons of full screen scrolling on 60Hz and 120Hz screens for less technical people who could barely perceive a difference when I was pointing it out, but it took some time to get them to see it.
MKBHD (YouTube tech video and reviewer) talks about this a lot: It’s highly valuable to people like you and me who are attuned to the performance of our devices, but most people don’t notice. Or care!
I would appreciate high Hz displays everywhere, but I admit that Apple has probably made the right consumer choice tradeoff to compromise on refresh rate for these lower end devices where minimum cost and maximum battery life are the two most important features for those who buy them.
So if you’re actively moving between a high-refresh-rate device (like a lot of people here with their 144hz monitors) and then one with a lower refresh rate, you’re probably more sensitive (and potentially annoyed) by the discrepancy.