I farmed the hell out of seph ex when it came out and got weapons for every job I have at 60 (everything except pld, nin, and mnk) within a couple weeks. Nobody I know who are able to clear it want to farm it at this point.
I still want the bird but few farms pop up on pf on my server these days, and rarely are they successful. I'm pretty much sitting tight and waiting for an increased drop rate on the whistle.

As for a horror story, well the other day I joined one 'farm' as sch, but then another sch joins and didn't want to budge so I decided I'd learn how to do the fight on whm. I did alright, but watching the sch just made me cringe so hard. They didn't do much healing or mitigating... they weren't dpsing either... their fairy was on sic... and before the pull they deployed E+E. No adlo, just E+E. Who the hell does that?
Even if the healing was on point, the mechanics sure weren't; people were stepping in the green bubbles as they moved in place for the stomps, and every single run we wiped soon after green/purple markers because people constantly overlapped each other. It was a mess and I left after 4 or 5 wipes.