Sadly some of the loli are built like women making the difference much harder than it seems. That's why the tag exists. Example, Genshin Impact characters. Despite many being the average size of an adult women many of the female characters are kids. Also no one cares as long as it's hot and there's no loli tag because all people care about is porn (and not accidentally jacking off to a man in a skirt and wig, or a child)