Can I ask you a question? I ask this in good faith, as a matter of curiosity, and am not being critical in any way. If you do not want someone to message you,

Can I ask you a question? I ask this in good faith, as a matter of curiosity, and am not being critical in any way. If you do not want someone to message you, why have you given them your number? My assumption would be that if you trust someone enough to give them your number then it shouldn't matter if they know that there is another app that they can use to message you through. Of course this is only my assumption and I am just curious as to your reason why you would not want some particular person to know that they can message you through Signal rather than some other, less secure, app.