I think yes, it could disrupt. Take note, how many people use Facebook, almost 3 billions now so Libra has enormous users base at the beginning. To many people it could the most convenient method of payment. What' more Libra signed cooperation with 21 members e.g. Spotify, Uber or PayU... It is going to be huuuge
Not all those three billion users would understand the concept of Libra and neither all the accounts belong to different people. There is duplication too. Still, it is not possible to deny the impact of Libra once it gets passed by the political authorities of USA. However, it will give more hype to bitcoin because that is truly decentralized which Libra wont be. It will just spread the concept of crypto currencies among common people.