About Google data collection, my parents taught me that
Android solves a lot of security problems, to be fair. Its just a privacy hog for Google and potentially for the US government 3 letter organisations plus you lose some control. But the lack of having root is a plus for many users akin to how capability-based security is a plus for users but hard to implement because they’ll just click on “yes” the whole time. Symbian was a capability-based OS from the ground up, btw.
I use Firefox instead of Chrome on my mobile phone (and I am trying to switch away from Chrome on my desktops). Its great, ever since Quantum especially, however all these Electron apps and apps on phone still use a headless embedded version of… Chrome. So from a security PoV you got an attack surface of two browser engines.
Btw, for a headless version of Firefox for the terminal, check out https://brow.sh