I don't see the insult. It seems to me they would support the decision to stay home, but their partner clearly prefers to work.

I'm in a situation right now in which only I am working and my wife's at home with the kid. This is for visa reasons (H-4). My wife's self-esteem has plummeted because of this situation. She indeed complains it is extremely boring to stay home all the time. I completely support her desire to get back to the workforce, and I really look forward to the added benefit of our combined income.