The fact that people are willing to trust FB with their personal photos or favorite political memes doesn’t mean they’re willing to trust them with money.

And it doesn’t matter who controls Libra if everyone thinks of it as ‘the Facebook money thing’.

No, it doesn't matter if everyone thinks of it as 'the Facebook money thing' if that's not what it is. The only thing that people's perception effects is whether or not governments influenced by said perception allow Facebook to build a wallet in with their service in those regions. Libra the currency will be a thing regardless.