You're right, my phrasing re: "sexual control" is rhetorically unfair, and you're right that it is a horrible thing for those who experience a loss of fidelity with their partner.

But I'm not talking about people who have actually been cheated on. I'm talking about the use of the term as a generic insult, which, if you feel so strongly about how subjectively awful it is, I think you should agree is a petty way to weaponize the term, which is what the alt-right does by calling everyone who they perceive as being weak or having been defeated a "cuck".