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.
Obviously every generation has its struggles, but I was never disagreeing with that. If you treat this as "just another generational problem," you are fundamentally missing the point. It's as you say, a whole different set of problems.
Micro targeted ads are hard to ignore because most of the time they're influencing our subconscious state. This isn't just another generational issue we're facing, it's fundamentally shaping the way people look at the world without them even being aware of it. It's not limited to just the current generation, because everyone interacts with technology. However, targeting inner psychology will obviously impact people with less developed brains more than it will impact adults, and we're beginning to see the effects of that already with Gen Z.