There are girls in Japan who are 25 years who look as if they are anywhere from 12/15 years of age. Some of these girls have growth problems, and it will remain with them the rest of their lives. For example, some of these girls are incapable of growing public hair, their breast size barely registers as an A cup, and they are lucky to even reach 150cm. These girls are not underage, they are 25 years old. They star in Japanese adult media. Even in China where their adult enterainment media is growing at an alarming rate, as millions of girls who have serious growth hormone issues and look far far younger than they really are. What are european and north american courts to do then? prosecute people , boyfriends or husbands or girlfriends because they happen to have naked pictures given to them by said person, and prosecute them under kporn laws, despite the person not being underage in the first place?
The reason I am saying this, is because many loli games can fall directly under this assumption. I am naive enough to think all the loli games are anything but underage girls? no, but the fact remains the vast majority are girls with growth hormone issues, and more importantly the genre outside of real life is pure fantasy. People label other people with dreadful names, kink shame etc, and as you have pointed out it's the prudes and people who think nudity, sex etc should never happen except under the sheets with your significant other and even then having boundaries. I really dislike people who think like that. There is nothing wrong with fantasy, with nudity in good taste and sex. people who have nothing better to do, should mind their own business and move on and find something else, it is not as if this type of genre is hurting anyone, because its not based on anyone anyway generally, and non of the models are considered under 18 anyway.
I have neice who has growth hormone problems. she has to take medication for the rest of her life, she doesn't look like a 22 year old more like a 10 year old, she hasn't aged or grown in years, and probably won't in the future. No one will date her, because of the stigmatization of what she looks like despite her age and finger pointing. It's not as if it's her fault she was somehow cursed with her body, she will probably never know about falling in love, boyfriends etc, all the things girls dream about, but she will probably never experience any of it.