@Thepeopleversuswork "To me a SAHM is someone who doesn't bring in any money to the household because they choose to focus on childcare and domestic duties."
This is a strange assumption. Focusing on childcare - absolutely. But families with SAHMs have cleaners and help with domestic duties as much as any other family (probably more so in fact).
@Thepeopleversuswork "And the reason that "matters" in an economic sense is that if you've never brought in any money you're not contributing to the household economic 'pot". Not a judgement at all, but it does change the dynamics of the household and the marriage"
You are projecting your own mindset there (and possibly your own experience). You can't comment on dynamics in anyone else's marriages. The most financially abusive men I've come across very much expect their wives to work. And crucially, they are secretive about money (often insisting on separate bank accounts). Those are the marriages with the unhealthy dynamics!
@Thepeopleversuswork "Someone who is making money within the marriage (unless, maybe, it's a bit of pin money from selling crafts) can't be classified as a SAHM in my book"
Of course they can! SAHMs can have passive income, investment portfolios or sidelines as much as anyone else! Why wouldn't they?