Now the problem with your logical fallicy link is there seem to be common sense conditions in which someone can in fact, claim to authority. Unlike in real life, I can't say, have a Phd in Kirin wipe scenarios. But I fight Kirin 100 times, I can experiences wipes with a variety of different LSes, I can experience recoveries. I can witness the situations in which such things are possible and the situations in which things are not possible. I know how long it takes for Kirin to pop summons, and I know how long it takes for raise affects to clear. I know the path in which Kirin and its pops take without hate and I know where you have to be to be raised from that path. I know what jobs can kite kirin and I know what jobs can't.
Knowing all these things, I can look at a situation and say, "this right here, is a wipe." And if you recovered from such a situation, then I know, somehow, your situation was different in some way. You had different jobs up. The jobs you needed raised died in more convieniant spots, you still had enough people alive at critical points.
So yes, I deem myself expert. Because to me, it's all rather simple. Just like I can say, I deem myself expert at operating my remote control. If it doesn't flip the channel, the batteries are dead. It requires new batteries. Whatever modes it has to be in, I know these modes. What direction it has to face, I know this direction. It's been 20 months since I replaced those batteries.I hit that button. No click? I must be an expert.