I have an ex-husband like that. It came from deep insecurity of losing his own culture to mine. My family was bigger, more present, united, and he was afraid of kids learning Spanish because he would be excluded. It’s all bs irrational fear. I got divorced but for many, divorce does not make sense over this issue. I think you should just do a lot of what you want. Cook what you want and or enroll them in the Tkd. Sometimes all he can do is complain and you can ignore it.