Sonos does fully support Android. Airplay and Trueplay are impossible on Android, and Android devices do everything else that can be done with iOS. The Android app can also play tracks stored on the phone.
You can surely build and think of equivalent features for Android, they might, however, require some additional work or additional investments? That would be okay though. But I don’t feel like they fully support Android or take it seriously. I’ve gone through the landing page of some products, and the list of key features, only to realize that these things are tallied for iOS and don’t work with Android. Maybe it’s also partly just their marketing that is at fault, but it makes me feel there is no feature parity.