[el_nino]

This might be a bit of a rabbit hole. My OnePlus has a relatively clean Android but comes with a few apps like Calculator, Notes, or Chrome that don't seem to be removable. They're also not core functionality. So I wonder how easy is it to draw the line between these and the crap that many phones come with.

Also stuff like Play services or the Google Store are somewhat replaceable. How could these be categorized?

[tjoff]

So what if someone wants to remove a non-core functionality calculator?

Let them.