Misanthropic is not a claim I'm making based upon data. It's not possible to validate independently, but a judgment by myself. Your claim sounds misanthropic to me - it sounds like, if we are high earners, we should distrust our spouses because they are just out for our money and will demand we work miserable jobs to make sure they have enough, and if we don't they'll divorce it and demand the money of us. That's bleak and distrustful of people.

I'm not expecting a Cambridge study, but I was hoping you had some sort of news article or something rising above an anecdote in a forum about how some guy's wife forced him back into his job. You seems to feel you should warn people about in this forum, so you believe that it happens at a rate such that it could happen to any of us. So in that case, "common" seems less "strawman", and more "correct usage". You don't have it, that's fine, but if that's the case, why do you believe it?