As much as
@hifinutt's post is (according to you) not on the point of this thread, your remark is totally irrelevant to what I posted. I don't know Signal, but I presume it is primarily a private messenger unless you decide to create groups - usually rather limited in size, in order to avoid unnecessary noise - whose members are free to participate in or not. It is not a medium aimed at spreading messages exponentially, like twitter or facebook, so I don't see why I should care about what my neighbour uses his whatsapp or signal account for. Or should I ?