“ Libra doesn’t compete with Bitcoin. It competes with other fiat. It’s a private currency vs state currency. (The first time this has been possible with a Blockchain’ish tech.)” -twitter
What is relevant to us is the point that, despite referring to itself as a Blockchain, there is actually no blockchain data structure in Libra. Which is also observed by the other blockchain experts.
For a better understanding on Libra, here is a video of our renowned Blockchain experts discussing the tech.