Well, this is bad because it's the Chinese government. But companies like Airbnb have to use proxy metrics like number of Facebook friends. If I could be proven to be the trustworthy person I am, then a host wouldn't need to look at all that. If I'm known to have destroyed someone's home, then someone else on Turo knows better than to rent to me. In practice, it's likely to turn into an eBay style "A++++ best person…
Wait Airbnb is gonna discriminate against me because I boycott Facebook?
This may have changed since when I signed up years ago.
It's just like your GitHub is a reputation aid when applying for a job. It's not required but what you have on there can help.
EDIT: In case it isn't clear, I'm not claiming here that Airbnb is forming some sort of transcontinental people database.