Let my 2nd kid have a crap ton of screen time since the time they could hold a tablet/phone. By age 4 he was playing madden on my xbox. He had taught himself all the numbers from 0-99, memorized probably half the starters in the NFL, their number, and their position. And when I asked him, I see your Seahawks (NFL Football Team) are beating the Cowboys 21-7.. How many points do they need to score? He responded 14 points daddy, 2 touch downs with PATs.. At 4 years old.. By 1st grade he had taught himself how to do multiplication (did not memorize it, but could manually calculate it), and understood the fundamentals that division was the opposite of multiplication (something his older sister unfortunately did not get - she was in 4th grade). I quizzed my son some subtractions, as he liked being quizzed.. 'What is 8 minus 12'. He thought a second, `negative 4 daddy.` My daughter, said that is impossible because numbers can't go less than 0, and then they got into a fight..
He is now in 3rd grade, reading on a 9th grade level at over 150 wpm and comprehending about 98% of what he reads.. He is amazing at sports, taught himself the rules of soccer by inference by playing FIFA on the xbox, and taught himself 2-3 different tricks in a space of a week by duplicating the tricks in the FIFA game.
He consumes a crap ton of youtube (watching streamers), but also how to videos, news, documentaries, and movies.
At the age of 5 he saw something on Law & Order we were watching (someone getting killed). We told him, to close his eyes and not look.. He said 'Why? it is just an actor pretending to get killed'...
I hate being the parent that thinks they have a genius on their hands, but I can't take much more of his brilliance, if Youtube / Screen time dumbed him down.. I am grateful.