Because I'm American, and while I'm not really a fan of most of the shit they're pulling, it's still more likely to be in my interest (or less against my interests) than whatever the PLA has in mind.
1. I was trying to display that NSA engages in the same actions as the PLA.
2. Real evidence points to real attacks on americans carried out by the NSA. The only tangible shred of information we have about the PLA comes from CNN/MSNBC/Business Insider talking points, and we all know how objective those are.