Being a compulsive masturbator, a cross-dresser and an ex-pornstar doesn't make you someone to look up to.
I feel like there's a lot more to Kaoru that the manga doesn't show. You have to be really hard working and dedicated to get to the top of any industry. He even left the porn industry and made it as an author so he probably has really good business sense. The manga probably just showcases him as shallow because autobiographies about hard life don't sell and it's easier to grab an audience who normally won't be into reading about girlyboys with a comedy.
He was the 1st crossdresser without any "changes" like estrogen or operations , that's what made him popular in the industry. He scalated quickly on the top porn company and made sweet sweet money until he decided to quit with the job.
Im still thinking tho... if he wasnt send to japan and stayed in brazil maybe he would have know how to properly masturbate and never crossdress. Maybe staying as a man and making a family at this point.
Im from south america and me and all the people i meet at the age of 6 knew what sex was but didn't care that much about it , now it is common for girls to get pregnant at age 12 or at least had sex at that age. While in Japan often they don't know much about the stuff and end up doing weird stuff like oshiima putting Battiers on his butt.Still glad nothing bad happend to him when meeting old men at young age and managed to succed in life (more or less)