So, being kicked right in front of last boss’ door is the new mode?

Yesterday I saw in AK Hard a vote dismiss kicked a MNK at the very end of the dungeon, about to enter last boss.

Everything was smooth and we had no problems in the run.

I voted No, but he was kicked anyway. And the only thing the others two answered when I stated at them for doing so was "XD". I tried to lock last boss to make them waste a bit of time, assuming the dungeon was lost for me too, useless and childish I know, and I was kicked right after obviously.

And talking about that with my FC mates, I find out it happened to some of them in the last days, like “two or three guys enter together and kick the others at the end to make some friend access the dungeon at that point”

Reported it, no answer from SE. Just an automatic reply that comes to my box again and again every hour.