I've literally never run into the problems you are describing. It might be true (it seems implausible but I don't know), but it is not a significant factor in

I've literally never run into the problems you are describing. It might be true (it seems implausible but I don't know), but it is not a significant factor in day to day ergonomics. Text crispness, page turning speed, battery life, physical dimensions are all much bigger factors in an ereader IMO.