The point of web3 is to abstract away things like sysadmin by commoditising consensus. Once a blockchain gains mass & momentum it opens up a whole new world of possibilities to hack/reinvent social media.

You could use multiple different types of social media and still maintain a single identity (auth). This means you could find friends and friendlies everywhere you go.

The key is the consensus layer and the ability to store & and read critical metadata. I'll give a personal example:

I've been helping a friend to create a combination of Netflix and DVDs. We package the movie licenses into NFTs (MovieKeys) so when the user signs in with their wallet they can stream all the movies in they own.

There are so many possibilities with this but lets focus on the social part. In theory, a social media service could scan their users wallet for MovieKeys and create a social graph based on that. Heck you could create entire forums just out of the people who owns a certain moviekey. I wont go further because we go a lot of things cooking atm.

The general point is, the technology and the UX to make these things possible is just an arms length away. The entire space got ravaged by scam artists instead of trying to build real magical experiences people actually want.