If I had kids, I would set limits on what they could watch on TV or what they could do with electronic devices. For example, I didn't watch anything on TV until I was six years old and saw the Macy's Thanksgiving Day Parade. But I don't think I would go as far as to not have a TV in the house. Here's why.
Lots of people say "Words have power", but that's not always true. Sometimes words have power, lots of times they don't. If all the words you speak and write have power, that would mean:
1. Everyone would believe everything you say and/or write.
2. Everyone would give you everything you ask for.
3. Everyone would be impressed with what you say and/or write.
Now if you're some high-ranking authority figure or some hotshot celebrity, you probably can talk or write your way into or out of anything. But the vast majority of us will someday find out that we can't, if we haven't found out already. The police officers who lectured kids on the dangers of illegal drugs as part of the D.A.R.E. program were dismayed to learn that their words did not have the power to keep kids off drugs, and in some instances, may have encouraged illegal drug use. When you complete your education and decide to enter the workforce, chances are you will be dismayed to find that the words on most of the job applications you complete will not have the power to get you a job or even an interview, and you might spend months job hunting and complete hundreds of applications before you get a job. If you're a parent, your kids might believe everything you say when they're in elementary school, but when they become teenagers, your words may no longer have any power over them, and they'll let you know that by either rolling their eyes at you or openly and brazenly disrespecting you.
A picture is worth a thousand words, and actions speak louder than words. Which means that images and videos often succeed where words fail. If you can learn how to do something in person or witness something in person, great, but what if you want to see something that would be impractical to see in person or learn something that no one else is able to teach you? In those instances, just reading a book might not be enough. If you want to see the wonders of Yellowstone National Park but you can't go there in person, what's wrong with seeing a video of Yellowstone National Park?