That's preposterous. I'm as left-wing as can be and I think that smartphones and social media are a plague. Anecdotally, in my experience my left-leaming acquaintances are the ones more likely to be aware of the dangers of social media.
Then you and your acquaintances are unusual. In my experience, the left-leaning people are pushing for more digital learning. In my country, every left-leaning political party has it as a part of their program. In EU, there's an entire left-wing party based around digital stuff (Pirate).
