it isn't about avoiding all harm as sociallity itself is harmful, it's about software not hijacking/exploiting our cognition especially in times when this would mess with our development
Customized propaganda made for the individual is the only thing I'm afraid of. Right now its easy to avoid the farm trolls that harves boomers minds on facebook, but given the costs go down and tech improves, we each of us have a trollfarm working specifically for us and that would make it extremely hard to not get brainwashed.
something is wrong with gmail filtering, I had no problems for years but now my custom domain emails go to spam when sending to people I've been emailing all the time...
linkedin is full of dark patterns, it's really unfortunate it became the business default, all other social platforms get more criticism while being only a fraction as bad
It's good to have private websites and keep them weird, but this will and can in no way change the internet in general, centralization of content is a very good feature, at least functionally it is necessary.