I don't get the people that celebrate this. I want to be able to communicate with all users securely and welcome solutions to do this. It is a better experience for me (and other Apple users) if adding an Android number into a group chat doesn't wreak havoc. Of course, it needs to be vetted and proven secure, but I wish Apple would get around to making this possible as we now see it if technically possible and leads to a better user experience for all users.
For all those celebrating retaining the exclusive blue bubble crap and saying people should just buy Apple products, you aren't being very open-minded or realistic. If Apple did shut this down on purpose, I imagine it is just going to raise some regulatory flags. The momentum seems to be shifting on how long iMessage or messaging from Apple devices can remain a walled garden. Beeper Mini technically proved it possible, and combined with the RCS announcement, it seems like Apple is swimming against the current if they continue to fight this.