It is deviant because it intentionally deconstructs the Creator's design. If you can rearrange organ and system function to suit your purposes, there's no reason you can't do anal penetration, sex reassaignment or any other form of perversion.
I sure disagree, both with your characterization of protected sex with deviance - as in a perverse act. And I point out that you have not proved this from Scripture.
It doesn't deconstruct the Creator's design. It regulates it. I note that God also gave husbands and wives brains and a full understanding of all the circumstances in their lives.
As an example, I have an aunt (her husband is departed now). She got pregnant early in their marriage. She almost died, list the baby, was hospitalized for weeks, and doctors told her not to get pregnant again. She did not. I believe they continued to enjoy the act of married love for the next +50 years. It was not perverse.