I don't care if anyone has a Xiaomi, Oneplus, Samsung, etc. Each brand is using a modified version of Android, and they chose to be compatible with each other. But for example the "blue vs green bubble" drama is a thing specifically because of Apple locking their unsuspecting users into a closed ecosystem. And it sure isn't Android's fault for not being compatible with it.
The more power a company like this gains, the worse will it be for the whole industry.
If you wamted privacy you would not be using the OS delivered messaging app that IOS can read anyway to flag CASM. And the group can screenshot and share. if you actually wanted privacy you would be using a tool like Session.