You point to the websocket proxy as evidence that mutiny isn't self custodial. You clearly don't know what it does if you think that
Yeah sure, just let me know when the domain mutinywallet.com will be seized or gone puff offline. Let's see then what would you say to all Mutiny users that do not run their own server. It says very clearly with your own words "Don't trust us"
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their funds wont be gone which is the distinction between self custody and custody.
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that serve for nothing if they cannot access their "account" on your server / domain. not your domain / server = not your bitcoin
For what will serve me some keys to a safety box, if that box is managed by somebody else and doesn't let me to access that safety box? For nothing.