It is both fairly common to say you're addicted to something as a way of saying you're really into something as well as to indicate actual addiction, and you can't expect people asked a question like that without detailed additional guidance to be able to give a clinical assessment of whether they are in fact suffering from an addiction.

Unless you probe what the respondents mean by addiction, or provide them a clear definition before asking, there's very little reason to assume they will be using a definition of addiction that justifies assuming anything approaching a clinical definition, or even anything negative.

My opinion goes in other direction: I think even with that caveat, what she went on to say suggests she's making assumptions about what people meant - especially given the age of the respondents - that I don't there's basis for unless the survey provided a lot more context than just the question given in the article.