It's just cheating buyers. Manufacturers do not write about the presence of dithering (pixel flickering). Even in the specifications (except for the word DC Dimming) there is nothing. How can a person understand that DC Dimming (an analogue of Flicker Free) can mean the exact opposite?
Even "true 8bit" VA monitors flicker. Before us is 8bit = (8bit + FRC) "red eye mode". You no longer need to buy professional monitors (to ruin your eyesight). Now you can do it for just $100. I suspect that IPS phones may have the same problem.