"The boss fight in the quest "Friends in Low Places" has been rebuilt."
What does this even mean?
We took the boss fight apart, and built it different!
As others noted above, this quest's end fight was a frequent perpetrator of Instant Red Alert, especially if you rushed down the boss. In many cases, you could end up with 25-30 mobs in the room.
This was awful for server performance, made it difficult to avoid the Red Alert, and just wasn't good gameplay in any form. We shouldn't (and generally don't) build boss fights like this anymore. It'd be a slightly different story if the game smoothly handled that many monsters, but
even then it just wasn't an interesting fight to just rushdown the boss and move on.
The new version has significantly fewer monsters, but you need to deal with them to deal with the boss. I'd encourage people to actually give it a spin before passing judgement. I'll be the first to say the new version isn't a perfect fight
either, if I were making it from full scratch and with plenty of time I'd do things differently. It's ultimately a small mid-arc boss fight in a small mid-arc quest. But! This version should be a smoother gameplay experience and should not incur instant Red Alert, which is most of the goal here.