We're going to have to learn a new kind of hygiene.
I was a very online teenager at the end of the 90s and I have formed friendships that last to this day. Or at least staying in touch. And it's not just me, it's the same for a lot of people I got to know offline who have different such circles.
Maybe because it was just a smaller circle of people? Maybe because it was so not normal that people were much more cautious? Or because half of the online venues were run by hobbyists? Or because no companies and bots and people trying to make money were involved. Probably the latter.
Early adopters of just about anything are smarter and better than the people who come along later.
Benefits - IRL human companionship.
Another example is a charity formed to help with some problem which it initially does well at. But then over time the charity matures and more and more of its funds are devoted to keeping the charity running, paying salaries, renting office space, paying for trips, organizing fund-raising events. Less goes to the cause. The primary purpose of all the fundraising then becomes to cover the overhead of doing all the fundraising. The cause is a second order consideration at best.
Social media has matured from being about connection, information exchange, community building. Now its just to keeping the clicks and comments coming so the ad-revenue and data-mining can be used to cover the cost of the servers, developers, and executive bonuses.