I know its cute and everything but its a bit toxic not letting ur husband buy a ps4. his money his choice. and that lead him to lie and hide things from her ,that's not what you want in a relationship.
I
think you might be looking too far into their relationship, because her concern is extremely surface level and can be found in any kind of relationship, romantic, platonic or familial. It’s clear that she’s just peeved with him because to her, it looks like he’s spending his money without caring about the consequences (because he is). Plus, even
he seems aware that he’s using his own money loosely, what with the spending it on F2P games. It’s totally normal! You can even get mad with yourself about such things.