[y.winter]

A few years ago I would say no, but nowadays I can understand it.
It's a pressure cooker with strangers, the only people you can have interaction with, you can't escape those who you can't stand, you're going from one room to another, you don't know what's going outside (and this show definitely makes you question), emotions are running high, every day feels like forever.
Yes, they chose to be there and they can chose to go, but even if they do it - getting emotional is still quite valid imo.
I didn't do BB but I've done something similar, so I can relate to this feeling.