In times like this you can raise a child with no internet and TV and they still can be the least naive people out there. The world outside is insane, and no matter what you do to “shelter” your kids, they’ll find out about it.
Now, I think it’s more of a concept of teaching our children to fight their battles, grow, think for themselves, make decisions, work on themselves etc, but also knowing what battles aren’t worth fighting. I gave up my smartphone a while ago because I realized that fighting all the tuma and the bad parts just wasn’t worth it. Theoretically I could of said “well it’s so useful, and Hashem really created technology, he must want me to harness it’s ability and overcome myself”. And yes, sometimes Hashem DOES want that from us, but I think, and I can really only speak for myself here that the world is filled with SO many battles to fight that children will not grow up weak without smartphones and TV.
There’s so much more overcoming our yetzer in the lesser more mundane and not exciting type of headline things. In addition if you raise your kids with a love of the Jewish people and allow them to socialize with people who may not share all the same hashkafos as you, that’s a great way for your kids to learn how to deal with the real world and deal with these types of technology.