Well. My kid started throwing chairs when it was time to do something else than play on the computer. He does not usually do that. I would suggest contexts vary. As a parent I'm not as concerned that the games would somehow "eat their brains". I'm more concerned about the noticeable negative long term effects too much screen time have on their behaviour. Whatever the underpinning psychological and longterm effects may be I mostly become annoyed at the poor behaviour. Social dynamics vary, of course. With our children too much screen time means more scream time.