With more and more companies dropping support for Air/Mobile, it's always good to show support for those that are continuing to do so. Right now there really is no stable, supported solution for Amazon ads on the Amazon app store via Air/Mobile. Even though you can upload your google play/admob app there, Amazon won't push your app if you don't support their Fire devices which utilize the amazon ad network. And keep in mind your app will not work on those devices because they don't have the google play services installed.
Also something to consider, Amazon has not posted anything about requiring 64 bit builds this year like Google has, so if the air/mobile sdk does not get 64bit support, the Amazon market will be our primary mobile app store moving forward.
If you are considering deploying your app on the amazon app store and want to take advantage of using Amazon's ad network, I encourage you to comment here and show your support. Thx!