If your kids get invited to a birthday party, you have to buy something for the child's party.
And making a home nice with a few cushions, nice duvet covers, etc is not keeping up with the Jones. It is wanting a nice house to actually live in.
And lots of kids want to o to clubs and activities, and they cost.
Sure easy for dads to ignore social obligations if they don't put their kids first. I bet they don't ignore social obligations that actually affect them though? So I don't meet many men that don't buy their round at the pub for example? But ignoring that social obligation would have an impact on them, so it is met.
Not all obligations are good obligations. If dads who thought birthday party gifts ran kids birthday parties, we'd all be better off. (Though, lots of moms hate these too, they are maybe more inclined to cave to the social pressure.)
And sure, there is nothing wrong with buying some cushions or a duvet. But as long as you don't need those things to keep you warm ,if they are things you like, and enjoy, that is a personal preference. Not a better or worse one than valuing sharing some pints at the pub with friends.
I'm a woman, I'd much prefer the latter, even though I also like a nice home. Is my view right, because I am not a husband? Or wrong, because I think like one?
I think you are really missing the basic issue, which is that married people don't always value the same things, and often there is no objective right or wrong answer to that. When one or the other thinks their view is the only one, then it makes it impossible to negotiate a fair solution.