What the parent is describing isn't so much OS version specific but device specific. If Samsung puts out a phone with a broken Android build on which the GPS is always faulty, as a developer, I can blacklist that device and my GPS reliant app won't show up on that device's Market.

Consumer buys that device, loads up the Market & tries looking for my app which their friend said was MUST HAVE. They don't find it on the Market so go back to the store, return the device & get another.

I think this is what kogir is talking about. Feel free to replace GPS with such things as broken OpenGL implementation, etc.