Daylight_Co So, our pixels do not emit light, which means there is no flicker
No light emission does not mean no flicker.
For example, I own a BOOX e-reader with Android that I run almost all of the time with the screen frontlight disabled, meaning it's purely naturally illuminated.
Since the screen can only display literally black and white, meaning no shades of grayscale (unless it's set to the really slow HD mode, where it actually does display real gray), it uses dithering in order to display shades of gray.
Thankfully, when it's still, it doesn't refresh with nothing happening (because e-ink doesn't need to)
But whenever I'm scrolling, or something on the screen is animated, the dithering of these shades of gray then starts needing to recalculate itself every single frame. This causes really obvious flicker, twitching edges of text, etc. while the screen is in motion, even though there is no backlight.
Thankfully, it's not that bad for me on the BOOX because this is only happening when the screen is moving anyway (because my problems are usually related to when this happens while the screen is supposed to be still)
But if your screen is constantly running at 60fps, there can 100% be sources of possible flicker introduced at the pixel level that aren't related to having or not having a backlight.