Now you're drawing a really long bow Glenn.
I just reread the thread because my perception was different to yours and it remains different. Dane hasn't followed any amateur advice in this thread, everything he's done he was doing anyway. All the amateurs have done is speculate on oil types and grades, Dane was going to overhaul the VANOS irrespective of this thread. Nor has he jumped aboard with your advice as if it were gospel and I have no opinion on that either way.
I'm not convinced you can diagnose a grinding noise without visually inspecting, which is what he did and in doing so he found what's making the noise. So all up, that was effort well spent. What caused the wear remains a matter for speculation and I suspect that is where your expertise can best contribute.
I think you're doing Dane a disservice by assuming he was blindly following the advice of amateurs, he did post this very early on.
I see a connection to a recent thread of yours Glenn about your disillusionment with this site but I really don't see this thread as an example (as much of a train wreck it has become). Don't be disheartened Glenn, your opinions still shine through the mess of amateur conjecture that will always make up the bulk of any open internet forum. And many of us notice your professional opinions.