Hey Nox -- do you remember what article on our site you were reading? Was it by chance
You're Not Pregnant. Why Do You Think You Are? This article does not say that pre-cum does not have
any risk, because you are correct, it does. But this only applies to vaginal sex. What this article says is that there is no risk when you have pre-cum on your hands and you are engaging in manual sex like hand jobs or fingering. There are only trace amounts of sperm in pre-cum to begin with, and they do not survive on an outside surface like skin for very long.
I assumed that's what you were reading based on your post. if you're referring to something else on the site, we're happy to take a look.