I feel the biggest problem with citing the law on this, is that the sexualization in this game through outfits and emotes, does not get to be considered as even softcore porn in legal terms. I personally consider it as such but it's a personal opinion, and one I have spoken about repeatedly. So if even the adult characters are not doing any kind of porn from a legal standpoint, then the child-like ones aren't doing it either. So if I were against the removal of the height restriction, what I would be using to defend my point is my own perception on morals and values instead of citing laws that won't apply here no matter what.
I said it before and I will say it now. The best way a pro censor can oppose the anti censors, is to base their reasons on their own views of morality instead of the law. So they could say they support censoring because they themselves do not want to see people sexualixing what THEY perceive as children. I feel it's a much defendable stance than citing the law, and it stands on much more solid ground. Past that, if there's nothing else to add to the discussion, they can go their merry way without having to resort to calling everyone the P word nor trying to silence others. Which is in my list, a quite shameful thing to do.
Silencing an opinion is the murder of justice.