At the water cooler, every one in my group said that if our retiring boss was swapped out for a particular manager that was known for being a "yes woman", we would quit because she was a certifiable idiot. It was no secret she was next in line and we made no secret we would walk. The company did it anyway and I was the only one to actually walk.

Worked out great for me, that job was shit and the next one I got paid a good 50% more, but the lesson here is that people talk tough but rarely do what they say they will.

Fun fact #1: she did indeed make their lives hell, and as someone who couldn't say no, that my former group got every undesirable project shoved at them. Not only was it supposedly soul-crushing, but they wound up trading their reputations for completely different reputations that, nicely put, would be regarded as "fuck ups."

Fun fact #2: I did not recommend them at my then-current job, because I don't respect bullshitters.

Fun fact #3: refusing to give them an in meant I wasn't going to get any more gossip from the old place, but reconnecting a few years later I would find out that the whole group got laid off 6 months after I quit, so they really would have been better off leaving.