I don't know about cheap or trashy but it's not useless. There are people who sideload things and that is where it gets most of it's use except for maybe a handful of games. So it's not useless. I don't sideload and don't care if it's there or not but there is a big percentage of people who use Google Play for some reason and other things where it is necessary to have it.
And PS3 controllers are not made by OUYA, that is not their responsibility. If they can do something about it then fine but no one should hold them responsible for something not even made by them.