Yes, when I volunteered to help senior citizens with computers right click was something none of them knew they could do, nor could they remember it from week to week. Phones and web sites are much easier.
Today it’s interesting to see the favored device at both kindergartens and retirement homes: iPads.
Yet iPad’s also fine as my daily driver.
Computing is entering its appliance age.
https://www.macworld.co.uk/how-to/mac/right-click-3610351
I don't own a Mac so I don't know how new Mac users discover how to do it. I remember there is something like a right click on Macs and I asked how to do it last time I had to use one for a few minutes. But if there are people that don't explore a UI with a visible right button, what are they doing with invisible controls?
One would always let go of the mouse to click. He would position the mouse, lift his hand a few centimeters above the mouse button and then press down on it fast. Sometimes worked, mostly didn't because the mouse would move during the click. Now imagine him trying double clicks..
Another guy would make extremely detailed notes. I would show him some setting in a dropdown menu of Word, and he would perfectly draw these menues in his notebook. By the end, he probably hat 20 pages of beautiful notes, it was actually quite impressive.