It's not that it's long or anything, it's just not fun. All of the bosses there are basically anti-BLM. The first boss continually phases out, and you need to run/track him down [which will likely cause Enochian to fall off]. The second boss, unless you're allowed to be lazy and let everyone else move the totems out of the AOE, is just as frustrating, although you can plan around it to keep Enochian up [you probably won't be able to do your full rotations, though].]
The first boss really annoys me because you have to go looking for him and when I find him I find it quite fiddly to target him in that little bubble. So even if I get there in time to save the Enochian it can still f**k up. I quite like the last boss though as I think it's a good fight overall.