I've mostly worked in startups and on side-projects since I met my partner, so I'm fine there, but I think in many situaitons it's perfectly reasonable for a partner to push back on it. If your family relies on your income (and you don't have a decade of FAANG earnings saved) then it needs to be a family decision. Likewise if you have kids then anything that involves extremely long hours that prevents you from doing your share of childcare is also something that isn't an automatic yes.