Disabling RCS, which apparently is encrypted with the Signal protocol for G messaging, so that people can continue to comfortably use unencrypted comms (sms) in Signal messenger itself would be a really wild course of action.

https://www.verizon.com/about/news/verizon-google-messaging-...

https://arstechnica.com/gadgets/2021/06/google-enables-end-t...