SS7 is very insecure, yes, but intercepting inbound SMS is still orders of magnitude more difficult than spoofing sender/caller numbers. Allowing SMS intercept

SS7 is very insecure, yes, but intercepting inbound SMS is still orders of magnitude more difficult than spoofing sender/caller numbers. Allowing SMS interception without the home network's consent seems like a quick way to get offboarded as a roaming partner.