I support this decision, I don't use SMS and I'm in support of everything that kills SMS.
Next step: Please stop using phone numbers as a user ID. I have lots of throwaway phone numbers, but many people don't want to leak their phone number to every single person they want to have an encrypted conversation with.
Next step: Please stop using phone numbers as a user ID. I have lots of throwaway phone numbers, but many people don't want to leak their phone number to every single person they want to have an encrypted conversation with.