They aren't physically addictive like alcohol or opiates but it's very clear that many people have a psychological dependency on them. Whether or not a psychological dependency counts as an addiction is up to debate (personally, I believe they are due to my experiences with self harm, which many people including myself were or are psychologically dependant on) but the differences are mostly semantic if they end up functionally the same
There are a lot of reasons for distraction while driving, but we don’t call all of them addiction on that premise. If a driver was not looking at his phone - maybe he’d be looking at something else. The phone is not the reason - it’s just a very suitable object.
this is thoroughly debunked with hard data from distracted driving laws that focus on phone use while driving. We have the luxury of both before and after data and across different jurisidictions.
I agree, but something being distraction does not automatically mean it’s addictive. Gear shifting is a distraction, but we don’t consider it addictive.
[...] the majority of research in the field declares that smartphones are addictive
Though that section continues on to disagree with that majority, "the majority" declaring smartphones are addictive is certainly supportive of them being so.