Internet addiction may not be as bad as some other forms of addiction, but it’s more common (and more personal). I have young children now and wanted to learn more about it, so I included some questions in last year’s ACX survey. The sample was 5,981 ACX readers (obviously non-random in terms of Internet use level!). I don’t think the results were very helpful, but I post them here for the sake of completeness.
https://www.astralcodexten.com/p/indulge-your-internet-addiction-by