Even if you have the proper atmos AVR with in-ceiling speakers, it all boils down to whether if streaming services would like certifying the android box as compatible for atmos. Customers shouldn't be the victims of a trade war between two companies and that's where the netflix input stream for kodi comes into play.

Here's the link :

https://github.com/CastagnaIT/plugin.video.netflix https://github.com/castagnait/repository.castagnait/raw/master/repository.castagnait-1.0.0.zip

Relevant kodi thread : https://forum.kodi.tv/showthread.php?tid=329767

Any movie that shows up as DOLBY-HD on kodi means it can play atmos. I verified with my denon x3300w and can confirm that it works. Its not True HD atmos, but DD+ atmos. So, it's a compressed audio file but it's better than nothing.

Kodi is not usually layman friendly and the netflix input stream doesn't have a full fledged UI, but it plays movies better than the native netflix app.