The value behind that attitude is that it is a problem to think that women are the ones expected to choose staying-at-home, when culturally this expectation should be distributed equally among genders.
Another well-educated women who choose to give up her career and stay at home, without a corresponding man doing the same, is just another data point that makes MY career look invalid, and sees MY career as optional.
Like, more power to her, but it does make me sad at the state of society.