I've recently realised that the biggest problem with smartphones is not that they steal your attention (which is bad enough), but that they steal your disattention I don't know of a better word for it than disattention. Perhaps downtime? But it's not so structured. It's just those moments where you'd previously let your mind wander. Gone forever.
While I don’t want to downplay the toxicity of smartphones, couldn’t the same be said for books and newspapers?
Newspapers are probably an intermediate between those two, to various degrees depending on the specific newspaper (trash vs deeper analysis).