You cant see his penis, he's literally wearing underwear. But going with your logic, I doubt that a woman wearing a bra is considered NSFW. NSFW is for offensive stuff. Explain to me how this is offensive in any way? He's wearing underwear.
Females' jokes about males' genitals often go unnoticed. However, when a male makes a joke about a woman's body, it is almost certain that he is going to be flamed to hell. Thats equality to you, my friend.