You gotta mistreat people pretty bad to get 94% yes vote.
They demonstrated that they weren’t able to make things work, so there was no choice but to escalate to a union. I won’t be surprised if heads roll in upper admin once the Board of Trustees realizes that there’s no going back from this vote. I’m sure the union will be a bureaucratic headache for everyone, it’s unfortunate it was necessary.
So perhaps it is a good thing unions are allowed to over-promise, it balances the power structure, if only a tiny bit.