So Enigma and Ark are different concepts. Enigma is the framework of the emergent behavior if you add Covenants to a network similar to how Lightning is the emergent behavior of adding channels to a network. As Submarine Swaps are to Lightning, Ark is to Enigma. So it doesn't really make sense to compare them in that manner. Nor does it make sense to call them vaporware. Enigma itself isnt even something for me to code, it's me talking to people who are already collaborating such as Lightning Service Providers and wallet developers and convincing them to integrate covenants into their systems. CTV is active on both Signet and Thunder (Drivechain network) already so it's accessible there. Sapio is a frontend for Bitcoin core to allow you to do it yourself. I also don't get this thing where we've started calling things vaporware after a week. It kinda degrades it, need to reserve that for things like duke.
Monero could potentially bootstrap CTV but it has a long road ahead. It currently can't even do Pre-Signed Transactions (PSBT's) yet, it needs a hard fork to do it.
https://comit.network/blog/2021/07/02/transaction-presigning/
I like to give monero the benefit of the doubt since it currently provides real utility that Bitcoin can't quite yet give. But that paper and article gives a good insight to the challenges of monero's premature optimization. I also think if you do add covenants, you'll have to ask yourself if you also want channels as they're similar in nature except one is deterministic and the other is indeterministic. I think the criticism of trying to onboard the entire population into a single indeterministic primitive is quite valid, hence my work, but I also think we've also lost the plot somewhere along the way. I like to nudge the BCH guys because their culture is "layer one" but due to their recent upgrades, they're now capable of both lightning and potentially Enigma, there's some limitations but the only thing holding them back now is a cultural limitation, if BTC were to fail, would we not migrate there and use the lightning network there? The BTC culture is overly reliant on Lightning but that's where i provide a counter narrative that's hopefully palatable for everyone
