You are a bit ignorant. As nostr:npub1nccwjspr3nv7h67xx2qhdh2dzzvpyy55gte2dsu8yl7xd7n74y9qydz7mj told you, nothing prevents a user from sending twice to the same address or to any other address, the software cannot prevent this.
Why don't we talk about the ricochet fees address burned into the samourai code through which you can trace all the addresses that have used ricochet or that samourai doesn't handle tor identities in the android app or Sparrow, or that in the whirpool desktop client it constantly reuses the tor input circuit or the xpub that was leaked in the android client?
Wasabi have continued forward selflessly with a coinjoin with 0 fees, you samourai guys were either morons for adopting a poorly built solution or you were simply paid by the samourai team.
nostr:note1sks56vejx3jj6zdu3u55q8rrrc250cfuynt58jasm60gxzen58ks8r8ud0