There's some evidence that mobile phone access is one of the biggest drivers in this. This talks about teen fertility but I'd imagine it's similar in other age categories as well.
https://homepages.uc.edu/~moscoshn/Personal_webpage/papers/S...
https://homepages.uc.edu/~moscoshn/Personal_webpage/papers/S...
Half of people watch more.
[1] https://adwave.com/resources/average-daily-tv-viewing-time