I'm sorry but I find this story misogynistic and sexist. Also, unrealistic. I am on the conservative side, but don't believe in shaming people for sex work. Mandy sounds like someone with poor financial education, but her attempts to get herself out of financial troubles was the right way to go. She shouldn't started OnlyFans, and if she did, she certainly should not have revealed her face. Don't most/many people who turn to OF hide their faces? Also, doing OF doesn't mean getting into real-life sex work. If anything, a person who was outed doing OF would probably double down on that line of work to earn more money, as the secret is out and they have less to lose. I don't support services like OF, but it certainly helped sex workers to move from dangerous and unpleasant real-life physical sex work to making online content.
I believe we shouldn't choose partners who make awful financial decisions and commit financial infidelity. But the husband in this story chose a pretty wife and enjoyed getting all the compliments, up until she revealed she's in debt. And I'm sorry but $10k isn't a huge amount of debt. Also, kids nowadays are more open-minded, and hearing that their mom does OF may not sound pleasant, but the younger generation is more accepting.
I get that this is most likely fiction but this scenario would only apply in closed-minded, judgmental societies.