Not something for general users but, for organisations and public figures, having a platform with only verified entities is valuable.

For general users: Mastodon and the Fediverse.

Bounce off from 3.20% to 3.19%? Not the wording I’d use.

Is this right? Out of curiosity, how do these sites flag themselves as content for adults?

Obviously, this is the solution. Sites that do this correctly, and software that detects the metadata. Parents are the ones that need to choose the correct software and enable the correct settings.

Sites that do not set the correct metadata are legible to be banned by authorities.