Nothing surprising in that article - my understanding is that he is saying that negative real interest rates cause gold to rise and positive real interest rates cause gold to fall - when real interest rates go +ve I and I have no doubt others will look for better "yield" perhaps away from gold.
The question is when that will be - According to his table, based on official UK CPI figure (if you believe that) interest rates would need to be above around 5-6% nominal to start affecting gold. Do you genuinely believe that IR's are going back to anything like that soon, given the BOE (and the Fed) seem committed to use thin money printing to surpress them as long as need be and if they did rise that high it would almost certainly cause property prices to fall, thereby creating new "yielding" opportunities.
If and when there is a genuine "recovery" (i.e. debt paid or written off to allow productive investment) I hope I'm smart enough to be amongst the first to start looking for new opportunities - sadly I dont see that happening anytime soon given the debt problems and the appetite for bailouts.