Any sex game with non on age characters is a problem, always.
READ THE SITE RULES! AS IN THE RULES REGARDING F95ZONE.TO!
As for the general truth of your statement.
Frankly speaking, this whole underage thing is so set in the American public, that anybody having sex with someone under the age of 18 is called a paedophile, when again, the terminology refers to people sexually attracted to little kids NOT teenagers.
This completely disregards that there are states in the US where the age of consent is below 18 AND that in many, many, many countries around the world the age of consent is between 13-16 years and not just some backwater hillbilly countries, but most of Western Europe and many countries in Asia.
The idea that someone who is 16 years old isn't old enough to decide with whom to have sex with is basically an American thing.
I remember when I was that age, if my mom or dad had thought they could tell me who I'm allowed to fuck with, I might have just walked out of my home.