In Gary Thomas’ book Married Sex, he systematically breaks down every single objection that a woman may have to texting her husband nude photos. This is coercive.
You wouldn’t want to “unnecessarily deny” your husband. Just because it could be used like porn doesn’t mean it is porn. The Bible doesn’t speak against it. He works so hard for the family.
He never mentions the reality of revenge porn or blackmail. I have talked to so many divorced women whose husbands pressured them into this. One woman was denied a promotion at work because these pictures make her a blackmail target. A Christian book shouldn’t be doing this.