You can call them "primadonnas" if you like, and maybe they are! If it's just one or two people, and they aren't irreplaceable, and they're being noisy, then that's exactly what they are.

But if it's the bulk of the team, or it's key team members, then being noisy about something --- an ethical boundary, a workplace demand, whatever --- it isn't "primadonnery". It's the marketplace at work. In our industry, workers often have a lot more power than they understand, let alone wield. Getting angry about it won't change that.

There are all sorts of organizations we would refuse to do business at our firm. I can't see how it's any different in this scenario.