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.
So i support Google by using an open source OS? Just because your phone uses Android dosent mean it has any Google services included. Since Android itself is open source, there are many Android OSs that dont include any Google Software.
Network effect. Same reason why you should use firefox (or alts) as much as possible over chromium (or alts).