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.
I've seen people get legitimately bullied for it. Just because you haven't seen it doesn't mean it's a minority among all demographics.
It's utterly despicable that you've witnessed this happen, and I ask out of genuine interest: how widespread have you seen this bullying?
It's not the majority of interactions but it was common enough in high school and college that it became a VERY decisive topic. It seemed the Apple users who didn't bully anyone were unaware it was happening, and the android users, whether or not they were bullied, were always mad about the bullying, which, from the perspective of average iPhone users, made it feel like android users were constantly nagging them, which just widened the cultural gap between the two groups.
So if someone who had an iphone learned you used android, there's an equal chance you'd get someone who was a bully for no reason or someone who assumed you were combative about it and either way looked down on you for it. It was an unfortunate situation.