That very well may be true, and would definitely be a fix for people who:
- Will be using only 3.3 by November 3, 2014
- Do not need to support older versions of Android OS
- Are confident that the regression in MediaPlayer won’t effect ES, AudioTrack or SoundPool
- Are not concerned about other Cocos2d-x games/developers
Keep in mind that OpenSL ES is not new hardware, it is just another sound library. If platform devs use the existing native code to implement the new OpenES API (which it appears they are) then OpenES will have the exact same bugs as MediaPlayer/AudioTrack/SoundPool.