Sure. But prophecy is prophecy, whether that's backed by the divine power of Tiamat or Odin or any of their peers.
You're missing the point: that was merely an example I was using of how Rich left himself a massive backdoor for Durkon to return home posthumously, other than the obvious implication that he would simply die and be buried there. Hindsight is 20/20, but at the time very few if any people must have guessed he was going to come home bringing ruin as a vampire.
With that tendency of Rich's storytelling being established around deaths of members of the Order, I think he has deliberately left a similarly huge loophole as to Belkar's supposed death. The Oracle, in his divine-powered precognitive trance in #572, stated Belkar would "draw his last breath -- ever -- before the end of the year" after stating off the record that he was "not long for this world". This is after the Order's earlier visit, where he stated in #329 that Belkar "shouldn't bother funding his IRA" and should "savor his next birthday cake". None of those are a literal statement that Belkar will die, and pointedly leaving out that key fact not once but four times under direct questioning strikes me as a highly suspicious pattern.