An addiction would be you struggle to stop doing it. That would suggest they have no issue stopping, given a more interesting option.

> people not being able to spend their free time in other ways

> people not knowing how to spend their free time in other ways

Are two indications how it is difficult to stop something.

“I can stop any time I want!”

You don't stop doing drugs because there's some movie you want to see. People do get off their phones for that.

Have you seen how many people watch movies these days? Even in the cinema they are scrolling.

Not touching alcohol for 12 hours a day does not mean you are not an alcoholic.