DNMs don't want to use bitcoin. bitcoin is scaling via custodians. DNM people want to interact with custodians as little is possible. these are the first people who invented multisignature escrow and baked it into custom built ecommerce software. they are absolutely never going to adopt cashu. they are not going to just leave all their money with a trusted third party nor do they want to pay bitcoin onchain fees to maintain self-custody. they need something that makes self custody more scalable or they won't use it.