You could argue until the cows come home but to me TV can be an excellent educational tool if you know how to use it right. Of course, parents must play a role in making sure TV brings more good than harm to children.
I am surprised to find out J and K (now 6 and 3 respectively) are not couch potatoes. Meaning to say they don’t glue to the TV for long hours. Maybe due to the fact that we didn’t encourage it when they were young.