Sympathetic answer: I've heard of dysphoric people saying they don't like to shower because they have to see their own body. I remember hearing a TIF say she would shower with the lights off because physically seeing her own body upset her too much
Unsympathetic: He's a lazy misogynistic incel, he doesn't like showering because it's too much "work" lol
This is what happens when these kids never experience any real problems, struggles or challenges.