How is it inferior to Ecash? FB's coin is not meant to provide anonymity features like Ecash did, but that's just a design choice. Other than that, Ecash is often suspected to have died due to the lack of reach and partnerships, which is not something FB lacks.

So far, FB's coin looks very interesting.

>Facebook’s currency is not a successor of Bitcoin

Yeah the title is just low-quality clickbait; it's got nothing to do with Bitcoin.