I think all the social media stuff is missing the mark. It's 100% bad but it's just trash filling the hole society is making.
Looking top down at the problem, humans need self actualization or propose to be happy. Originally we evolved to live in medium sized social groups that worked together to ensure their survival, we took care of each other and that was what drove our purpose, or rather why that need evolved, it helped increase the odds a group survived.
Fast forward and we're now trying to derive purpose out of pure competition. What percentile is your IQ, your GPA, your income, your stack rank. Society is becoming hyper competitive because that is what makes the most money. Nobody interacts with their local community, they interact with those that provide the best chance of making enough money to survive: coworkers, their "network", prospective employers.
This is all great for perpetual exponential economic growth but not so great for humans. Instead of just being the best we can be for our community we're trying to make them compete, keeping people switched on in survival mode 24/7 to extract maximum profits. Instead of community we're trying to create a nice plastic wrapped substitute with social media and phones, they're not the cause, they're the symptom.