Halal to haram ratio is so true

Cousin of mine got married recently and Mashallah she’s a practicing Muslimah, prays and observes hijab and all that. Her husband is a very strict Muslim, salafi student of knowledge type of guy. Apparently he’s making it a big point to get her to change her lifestyle choices to be more in line with his. No posting on socials, no having friends over, no music, telling her what she can wear and can’t wear, no going out at night etc. it’s been tough for her. She was telling me that they’ve already had so many arguments about this and it’s still not even a year in. Please marry someone on your level of deen and don’t go for someone who is way less or more practicing