I'm not sure why it seems psychologists are prone to this, or if it's just the nature of media and headline-grabbing pop-psychology, but I see these sorts of statements pretty often from this sector.
It's so very very hard to figure out what is making a person do what they're doing. We have problems figuring it out with rats in labs, and the best we have there is usually speculation and strong correlation. Humans are a whole other degree of complexity. Of course, with the rats, people are trying to do actual science: coming up with experimentally verifiable hypotheses, providing proper control and test groups, eliminating variables, and performing proper scientific testing. It's very hard to do well, and you rarely get more than confirmation of a component of a behavior.
Yet you see psychologists with years in their field making professional statements on to the nature of culture and individuals with absolutely no rigorous scientific study, with only their personally experienced anecdotal data and an obviously heavily biased opinion to support them.
There are a lot of things that have changed in the last 10, 20, 30
If we're going to claim it's cell phones, there's an awful lot of work that needs to be done to eliminate every other possibility - or at least the reasonable ones - first, and that's just not being done.
Perhaps it's unfair to label all of them, but this is one reason why people don't consider psychologists "real doctors". You see them make asinine statements like this.