As someone who's not neurotypical and grew up in the 1990s I don't think we really did much for mental illness or have much of understanding of it until the past 15 or so years. Growing up the school system regarded people are disabled, learning disabled, lazy, normal, or gifted. There was no one checking kids out for social-anxiety, bipolar disorder, depression, etc. unless there was an extremely serious problem with their behavior.
Within the past 40 years they used to lock people like me up, give us lobotomies, forcibly medicate us, etc. Its easy to forget how society used to treat folks with mental illness. Its frankly no wonder that people to this day still hide it. Heck, I've had to contact the EEOC more than once. But the thing is, social-media didn't cause this, video games didn't cause this. I've always been genetically predisposed to this. In my opinion, unfettered access to the Internet in general is probably the worst environment for people with predispositions, but to simply blame everything on the environment we've create online through video games or social-media is wrong if not irresponsible.