You make google sound like it's some super ninja, google will only find your PBN if you let it, PERIOD!
I said it's like private property because you can see it from the outside but to go in you need permission. So google will only see what I want it to see.
Google can't see who owns the domain(s), they can't see that I'm the only 1 person running all the blogs/sites hosted on different hosts, cms platforms (wordpress, html, joomla, drupal etc.), different IP addresses etc. and if they do then I have to find out what I did wrong and fix it instead of making google some super ninja.
There are tons of people who swear that they'll never use PBNs again, so if it didn't work for them then sorry. But it works for me and a whole lot of other people. PBNs are also not black hat, I could say grey, but feel free to call it black. I say grey because I actually use some of the websites as real active blogs so some get traffic and some engagement they're not just for link building.
Whether you take my advise or not it's fine with me, I'll just keep sharing what works for me and will never mislead anyone or tell them about something imaginary or hearsay.
So Khassani guy, it's too bad PBNs didn't work for you and as you share your story I understand why you wouldn't recommend them. There are a lot of sad stories about PBNs but on the bright side there are tons of success stories as well.
So you can keep not recommending them because they didn't work for you and others, while I keep recommending them coz they work for me and a whole lot of other people. Some of them are even forum members here, who'm I thank for the great knowledge they've shared with us.