Some devices designed for "gaming" may run at more than 2GB but run of the mill typically won't regardless if they're older or newer, and you really don't need to be a programmer to offer a compressed build especially if you have THAT many people on Android that play it as you say and seeing as this is the first release where the file size has exceeded 2GB, I would imagine nobody would be having issues.
Tell you what Bradd... I am running the compression tool now on the latest version. I'll rerun the build and upload it once it finishes (it takes a long time to run). However, you should know there is a chance the game is eventually going to reach a point where simply compressing it will no longer be enough.