I think it depends on the content. I had a book in front of my face for about 6 hours a day for 13 years in grade school. Not counting college.
A majority of the content I watch on YouTube gives me more knowledge, from Programming to Fishing. A chunk of what I look at is absolutely junk and I feel like it rots my brain if I watch/read too much.
> A majority of the content I watch on YouTube gives me more knowledge,
Knowledge isn't the same as intelligence though. Maybe having effortless access to knowledge actually makes us less intelligent because we don't get to practice figuring things out ourselves as much.
A majority of the content I watch on YouTube gives me more knowledge, from Programming to Fishing. A chunk of what I look at is absolutely junk and I feel like it rots my brain if I watch/read too much.