In short, she is full of shit.
Maybe her perception is subjective. But I'd imagine her to be in a position where she can corelate these cause and effects more easily as you are.
Consider that, even if her clients find her via word of mouth and hence her specialism might skew towards this one demography causing an influx, noone would make such a claim without seeing probable cause.
I imagine many of her patients will mention a lot of the social interaction on "the internet" and "mobile". Which generates the belief this is a large factor and the way her patients relate to it or shift blame.
In the past you'd have the same problems (bullying, self-image issues, displacement, projected expectations,
So, "full of shit" ? Think not.
Maybe misguided causality ? Perhaps.