Google has recently opened up a form that makes it easy to disable RCS completely on Google Messages for your number by deregistering it.
RCS Chat feature
It looks like some users of RCS Messages app are getting another feature that you don't usually get with regular text messaging apps.
As you already know, Google is working on to speed up the RCS rollout on Android. But still, there is no date defined until when this service will be available to everyone. But wait, you can still use this RCS Messaging service without…