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.
Honestly, I also don't like Android. But well, Linux phones are still lagging behind, which is a shame, or else I would have gone for one.
Isn't android built off Linux?
It technically is, but "Linux" in Android's case is meant as the kernel.