>But when we are taking about 16 year olds it's muddier since we are taking about child porn outside of pedophilia.
It's not muddier. The issue isn't the nature of the people viewing the content, but the ability of the victim to consent to the creation of the content. There's no muddiness involved here - sexual exploitation of minors for the production of media is not ok.
"Minor" is a very cultural term, the US steps of adulthood at 18 and 21 are more comparable with 16 and 18 in Europe. Also a 16 year old can consent to sex, so why not to images (particularly ones they made themselves and distribute to single persons).
For 12 year olds it's much easier with the "we don't support pedophilia" argument (which has wide support)
It's not muddier. The issue isn't the nature of the people viewing the content, but the ability of the victim to consent to the creation of the content. There's no muddiness involved here - sexual exploitation of minors for the production of media is not ok.