One thing this article doesn't bring up but I have observed in myself since quitting social media about 4 years ago is the pain of living in a world where nobody holds the same values as you do anymore.
Yes, all these benefits will come to you from opting out of social media. You'll grow, learn and appreciate your own life more, and at the same time feel more and more isolated from the world around you.
You'll find you want to dig in deeper and connect with people in a more meaningful way - but there's nobody on the other end of that line. The people you try to forge connections with are empty shells: "These days, no one wants you – your physical company. People are aiming towards your attention and your credit card." Friends are accessories and only worth the prestige or social clout they afford you. My own ex-wife got angry at me when I initially quit social media, because in her mind if something wasn't out there for everyone to witness then it didn't really exist. I wasn't allowed to have a private relationship with my own spouse.
The most frustrating thing about this is the realization that you can't change this.
You can write articles like this, you can share it with your loved ones and friends, and they'll nod and agree that social media is bad and that they value real relationships, then close the tab and hit up Facebook again. The toxicity of social media is really something that comes from a realization in yourself that the life you're leading isn't fun, isn't enjoyable and isn't fulfilling. It's not something you can really show someone.
You'll grow to love yourself and be constantly disappointed in others. The healthy thing to do is to let these relationships decay into whatever they're going to be rather than fight the tide and try to connect to people who don't want to connect. My own friend circle has shrunk about 90% since I quit social media, and it's not just because everyone else is on social media. Everyone has a phone. The problem is people don't care.
It's lonely out there.