I’m not interested in the password angle and more interested in the “is signal culpable” angle. In which case we could just as easily assume there is no known p

I’m not interested in the password angle and more interested in the “is signal culpable” angle. In which case we could just as easily assume there is no known password or combination. If the evidence ends up destroyed, I don’t think the maker of the safeguard is responsible. That’s more my point. Whether or not Signal is making a valid “safeguard” is an interesting question as you point out. I think you’d be on thin ice, but I’d be curious to see how that plays out in court.