I am aware. I've been around a while.

I'm not worried about nation-state surveillance. What I am worried about is all the keyloggers on kids' Android phones these days, since I've seen a shady game company or two in my day.

What keyloggers? That would have to be keyboard replacement. Which is highly unlikely and can happen on ios as well.

My impression is that the very first thing a privacy-conscious person would do with a new Android device is install a secure keyboard. Is that not the case? Why should people trust any old software keyboard the company selling it sets as the default?

For a very long time, Apple didn't allow installing custom keyboards. And I would still bet a bit of money that they are more restrictive than the keyboards Android allows.

What valuable info can one get from a kid's phone?

I'd rather not speculate on that, surely you understand? I'm not saying a general "save the children" but would you consider thinking of them, if that doesn't sound too trite?