Once the US approves Facebook to launch libra, that'll be a good news because it is one of some achievements for cryptocurrency. I am not really knowledgeable about libra, is this currency really good and really useful or beneficial for both facebook and it's user? It's good that facebook is waiting for the approval because they can assure that it'll be legal to use.
I don't think there are many fake accounts. Sure there might be some, but bear in mind that the criteria that keybase asked to be entitled to the drop is not very easy to meet. I believe that the problem was probaly because of duplicate accounts. Developers with several old bitcointalk, twitter and Git accounts would be able to register several times with different details. I believe this was more the case than fake accounts. Let's hope that we can have a few more XLM Airdrops in the future.