I don't know why the author spends half of the article justifying how can youtube addiction be a thing, it seems to me that social media addiction is now an established thing, which a large proportion of people are subject to

If you own an Android phone there is a "Digital well being" settings which allows you to block applications after a certain amount of time spent every day, it also work for time spent on certain website on chrome, and it contains other features (focus mode, black and white mode) which I've found really useful. There are equivalent browser extension for desktop

Though blocking websites/apps is not a magical solution, in the past I've found myself just disabling the blockers when I really wanted to watch something, I think it only works combined with discipline