> Is it possible to remove/deactivate it via adb or other tools?

I haven't tried, I don't mess with my phone too much because I don't want to trip the Knox fuse.

I'm surprised an Android 10 phone does not have Duo pre-installed. Does it have the standard Play store and associated google apps?

Duo has 1 billion+ installs in play store, which basically means they pre-installed it on every phone.

https://play.google.com/store/apps/details?id=com.google.and...