well, they won't change the compliance costs, but those pennies for the swift message will turn into hundreds of dollars for the blockchain gas fee
you probably hold an antiquated notion of how much transaction costs are on blockchains nowadays. It would do good for you to update your priors on this one - you'd be surprised!
That tweet doesn't appear to explain anything about this at all. I take it the information is in the comments? I'm not able to view those.
i don't click on x links, but i bet one trump coin it talked about offchain without taking into account opening up to double spend.