I think you're bending over backwards to make the reaction to her comments a gender thing. Yes for years there was the boomer "I hate my wife" trope but that is dying off with the boomers. If she made a joke here or there about her husband I am sure no one would think twice but I have seen about a dozen clips/tweets of her disparaging her husband. Maybe they have a quirky relationship but if my wife was talking to a national audience about how I was average, or that we were divorcing by the end of the year, or that her mother told her to think twice about marrying me I wouldn't love it.