"The analogy with tobacco and the like definitely has limits. Nicotine is physically addictive; some people who quit smoking get the shakes and other physical symptoms. I haven't heard of anything like that happening to people who quit social media"

I spent the better part of twenty years struggling with an alcohol problem. Not once did I exhibit symptoms of physical addiction; I couldn't tell you what DTs are like. Addiction is a spectrum, and it doesn't necessarily require physical dependency.