It would be nice if you’d also mention the Rambam in the Halacha just prior to the one you quoted:
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And the Sages also commanded that a person honor his wife more than himself, and love her like himself. And if he has a lot of money, he must add in her favor according to the money. And he should not place upon her excessive fear, and his words with her should be with patience; he shouldn’t act depressed or angry.