you need to support allowing people to draw whatever they want

What if they just criminalized the distribution? You could make the same argument about drugs. You shouldn't be able to criminalize growing a plant - but you can restrict the commercial use of that plant's products.

I think we actually do need to look more closely at the specific content in question here before making broad judgements. The guy at the top who seems ok with it claims "loli is for pedos"? Really? So loli unambiguously only means "Hardcore depictions of sex with young characters"? Because critics like to apply that label to any manga or anime with young girls in it. (I guess all of us are talking about the former but you never know.)

Japan doesn't have freedom of speech by the way. Their constitution protects a general idea of "freedom of thought", but practically that isn't applied to entertainment. All theoretical though. I don't care what Japan does. They shouldn't do something because enlightened westerners demand it.