Do you happen to know anything about what they'll do about spam? fAt present, a spammer needs your phone number and a source phone number in order to spam you.

Do you happen to know anything about what they'll do about spam? fAt present, a spammer needs your phone number and a source phone number in order to spam you. A suitable source phone number isn't difficult to get, but presumably spammers' numbers will be blacklisted by Signal as soon as someone complains about the spam. If they drop the need for a source phone number, what will replace that threshold? Do you know?