I don't understand the idea behind it. Now: 1) You give your real number to someone. 2) Somehow your real number goes into a list used by robo-callers. 3) A robo-call arrives on your real number, disturbing your peace. After: 0) You give Mozilla 3.99 or 4.99 US$/month 1) You give your Mozilla number to someone. 2) Somehow your Mozilla number goes into a list used by robo-callers. 3) A robo-call arrives on your Mozill…
Maybe you use it as part of a multi-layered approach to personal digital privacy. Without having hired a lawyer to dissect the TOS and Privacy Policy for Mozilla's new service here, I'm going to assume for the sake of argument that they will not sell the data to brokers. If that is true, then it's one more way to try and keep your true PII out of circulation. For instance, maybe you pair this with a high quality VPN…
You are trying to avoid wholesale scoops of info and automated credential stuffing. If your threat model is people specifically seeking out and targeting you: godspeed.