Over the last years Android has gotten increasingly worse, which is something you just have to expect from a Google product.
It is still unbelievable to me that Google is shipping a product which takes 10 seconds to show anything when I search through my phones settings. What are they doing?
>open source
Sure. If you buy the right phone you get some open source components. Of course half the Android companies are trying to funnel you into their proprietary ecosystem as well. The rest just wants you to use Google's proprietary ecosystem.