If I understand correctly, there were no backdoors used here. Only zero-days. If the NSA is guilty of anything, they're guilty of not informing system designers of exploitable vulnerabilities. But then the argument becomes entirely ideological and naive since we all know the NSA's mission is almost entirely counter to that outcome.

Edit: Apparently, not zero days. Vulnerabilities were patched months ago. I think the point still stands, which is that this outcome really has little to do with debate over encryption backdoors.

2nd Edit: On second thought, there is an argument that, if a backdoor were in place that only government agencies had access to, the means to access it could be leaked just as easily and in a similar manner to the way that information about these vulnerabilities was leaked. Then, we'd really be fucked since a backdoor could likely not be "fixed" with a simple patch (it might be fundamental to the design of a system). Considering this, I'll have to walk back my earlier statement and agree that the topic of backdoors is quite relevant here.