It truly is like a drug.
It truly is like a drug.
Attention and concentration are skills that can be trained, so not all is lost. I was feeling like I was losing my focus about a decade ago and decided that every morning I'd wake up and read a novel for 30 minutes or so. Within a few weeks you'll notice the difference.
Reading a book, require attention but of lower intensity. While watching an hour long fast paced video, require a high intensity attention.
In the case of watching an hour of video, you're just there consuming what's going on. Reading a novel requires you to world build internally. I'd say that sort of attention is a much higher intensity version. Or at least it takes a lot more active involvement.
If you've ever sat for meditation you'll know that low-input stimulation can be much harder to keep your attention on, but being lost in daydreaming and 'monkey-mind' chatter is pretty effortless. Once you train in it it becomes no big deal, though. Same is true for reading novels.