Apparently it offers decentralized mixing for CoinJoin. Unlike Bitcoin's CoinJoin protocols, which require equal amounts to mix
It's all coinjoin, even the guys developing it said it, with just a different implementation, it hops through multiple steps in order to obfuscate the destination unlike a single traditional mash-up and spread, theoretically, it would be harder to track, in practice, well you need usage and you need low fees as 30sat/vb would kill everyone's funds pretty fast, think of every LN hop charging you a normal on chain tx
Looks interesting.
But why couldn't this be applied to bitcoin.??
Economics, the funds don't go through a single conjoin, so depending on usage and available users probably it will be at least 2 times to three times larger in size, it might not be much for guys trying to clean 100 BTC but if there are no other users willing to pay that much and you're the only one doing it defeats the whole thing.
Even traditional mixing has become expensive for small sums, this will just add pressure on the mempool!