Regardless of the reason, the end result is still the same, which is that new users are left with the idea that terminal is essential for using Linux.
You can say that you set up a distro without using terminal all you want, but as long as new users don’t know how to do that, my point still stands. Frankly, the fact that you even thought to bring up that point feels like, to me, extra proof that experienced users are highly dismissive of the new user experience.
I think having higher frame rates isn’t necessarily about whether our eyes can perceive the frame or not. As another commenter pointed out there’s latency benefits, but also, the frame rate affects how things smear and ghost as you move them around quickly. I don’t just mean in gaming. Actually, it’s more obvious when you’re just reading an article or writing something in Word. If you scroll quickly, the words blur and jitter more at low frame rates, and this is absolutely something you can notice. You might not be able to tell the frametime, but you can notice that a word is here one moment and next thing you know, it teleported 1 cm off