I can't guess at the specifics of that situation but if someone has cause to cry it's not like you can just ask them to do their crying outside of working hours. On the other hand maybe they have very little cause.
99% of the time I'd just nope out and let them have the room and I did ... many times ... but after a while it was so often it was frustrating.
It was one of the weirder situations I've encountered in the working world. Many of the crying encounters started with what seemed like personal conflicts within the HR team (they sat next to us so you couldn't help but overhear that). Then they'd go to deal with it in the conference room.
Eventually I found a way to safely express the level of distraction and discomfort these constant conflicts were having on me and those around me. Some emotion at work is bound to happen, but folks crying on conference rooms about an argument that seemed to be about banal internal HR processes, there's also an inappropriate amount of emotion too, and that impacts others.
Granted this was the HR team who complained to our management that the 24/7 tech support team who had to be on the phones all day "wasn't very friendly / social" ... it was weird.
