Libra has raised fears about the future of blockchain mainly because it goes against everything the community wants and believes in: decentralization.
Facebook could ultimately create a massive closed-loop revenue model from ads, digital marketplace, to payments. Do consumers want to bet on the status quo of existing monoliths?
https://elixxir.io/blog/is-libra-the-future-anyone-wants I have major objections to this libra coin. Although the hype it comes with has been good for the space, i think security of data will be at risk and the decentralized nature of the crypto space will be ruptured.