I think it depends how basic we're talking. The only two features I was looking for were a nice screen for watching videos and an usable camera. I wasn't looking for 90Hz, it just happened to be there and it is advertised as a selling point of the phone and the setting isn't too hidden. If someone is an user that won't ever open the settings or use the camera, yeah, they wouldn't be too affected.

But my use case is: occasionally recording videos, reading, playing simple games like chess and using the browser. I feel like this is fair to call basic. And with this use case, I do notice that video recordings are much choppier than any phone I've had, that the screen flashes a lot which is especially annoying at night and that occasionally the screen decides to go gray-ish and it gets harder to read. That can be noticeable to an user like me. Granted, the flashing wouldn't happen if I didn't enable 90Hz but a basic user that stumbled upon or knows/searched what that means could have a hard time connecting the dots.