Read the full post - there were a few interesting things I picked out (which I'm already doing) but the whole concept of "PINs" is nothing new. He's just given it a fancy name to appear like he's the first talking about it.
And secondly, if you set up your PBN's right.. they'll work great for a very, very long time. Google isn't going to hit a site that looks and feels exactly like a real one.. and that's how you should be building your main PBN's. Google are smart, but they're not smart enough to distinguish between a very well structured PBN and a money site, because at the end of the day.. both should be identical anyway. And so long as you've covered your tracks with the designs, hosting, etc.. your PBN will and should last for a long time.