While I can respect your opinion on the subject, I would like to point out that the reality is that Signal is already using this crypto coin on their app.
Signal has had several updates since the decision to implement crypto coin transfers in-app, and the option is still there. I take this to mean at least some Signal users must be using this feature.
I would also like to point out (again) that it is entirely opt-in and users can decide for themselves if they would like to chance the risks associated with the service.
I understand you have a strong opinion here, but unless you can offer a review of the service itself, I don’t see how you are adding to the discussion at hand.