>The claim, as far as understand it, is that Blockstream supported this plan, anticipating its failure, while working on its own replacement technology, Liquid.

I took a quick skim of blockstream's materials on liquid, and it sounds like it's something totally different to lightning? They describe it as some sort of ripple-like network for transacting in tokens? eg.

>Liquid uses an approach to consensus called Strong Federations. A Strong Federation removes the need for costly Proof of Work mechanisms and replaces it with the collective actions of a group of mutually distrusting participants called functionaries.