I _NOT_ defending, minimizing, or advocating for Nexus, Android, or Google.There is a big thread on android central forums about wake lock issues found in 4.2.1 returning. People are fixing the issue by disabling location services. I don't want to do that though.
That said, I would kindly remind everyone that many people love to complain or "jump on the bandwagon" if they are anti-Android. As such, some of those claims may be exaggerated for ones own agenda.
I have not had one single problem with mine, nor have any of the many people I personally know that have Nexus 7.2 devices. I'm not suggesting this is not an issue, or that ours our perfect.
What I am doing is simply calling attention to the fact that there is _NO_ Perfect product (smartphone, tablet, computer, etc).
As far as the issue you mention, the one great challenge with Android for those who have neither the patience or knowledge to do some basic trouble shooting, is that at the first hiccup they condemn Android as some sub standard OS. Without taking responsibility for the device they _voluntarily chose to buy_ they simply get angry, bash the device, and give up.
It's well known that unlike Apple with an Android you have a greater degree of personal responsibility to sort out issues yourself with the help of a vast community online. However it's not a five minute fix and in lieu of a genuine desire to learn about, and maintain your own device, one is wasting their time.
Some of us are very well suited to Android and others are not.
It might be wise, that before people jump to the conclusion that Android, or the Asus made Nexus 7, or even Android 4.3 has some kind of massive problem, they think twice.