The problem is that Aliyun doesn't simply fork Android and run it's own App Store (as Amazon). It instead tries to rewrite bits, use some bits and create a Frankenstein type monster. Again, that's no real issue. However the real issue is that it's claiming to be Android Compatible, which means it's attempting to market itself off of Android's back. Add that with the fact they've stolen apps and apps written for Aliyun don't work on Android and we're all in a right pickle.

If anyone wants to fork Android, they're free to. But don't claim Android compatibility after messing with the APIs. Basically Aliyun would be a leach for Android platform and Google has the right to throw it's weight around in that regard.

Once again, Amazon doesn't mention Android when talking about the Kindle Fire and they've never heard a peep out of Google or Andy Rubin. If Acer are that convinced that Google is doing them wrong, they're more than free to leave the OHA and start having press conferences left, right and centre.