If, as you insist, pool luck is just that, then surely it can not be demonstrated to be otherwise. Unfortunately for you, it has, and that by the ignorant mob you so detest.
On the contrary. For the sake of the argument envisage yourself as the sole miner of bitcoins and ask yourself whether you would find a block bang on every 10 minutes or if there would be a variation. That's Solo. Now extrapolate that variation over the number of miners/pools we currently have and it's only natural the variation is going to be exacerbated.
So, if someone is astonished at how un-lucky (or vice versa) a pool is, so what ... !?
It becomes repetitive. Simple as that. Just the same as the numerous posts on slush's payout times become repetitive. The issue is not with what people are (or aren't) astonished about but rather that they keep flogging a dead horse.