Now, all Google Messages will have an extra layer of privacy because end-to-end encryption prevents third parties from accessing your messages, ensuring that the only person who views your message is the intended recipient(s).
RCS will now be activated by default for all users, both new and existing. This is a significant development because it ensures everyone can automatically benefit from the additional security unless they have previously disabled RCS messages. Either way, users can turn RCS on or off in their settings anytime.
iMessage has had end-to-end encryption since 2011, which gave it a significant competitive advantage for over a decade. Google's encryption adoption bridges that gap.
However, other RCS to iMessage issues will persist, such as the loathed green bubbles and the reduced quality of pictures when sending from RCS to iMessage.
Google has been campaigning for Apple to adopt RCS, which would virtually solve all issues. But Apple hasn't budged, likely because the blue messages are a significant way to keep people within the Apple ecosystem.