Yes and most of us were exposed to porn before the age of 15, because one friend had internet faster than dailup. We even had a guy in our school that used to sell cd-roms filled with porn. This was before smart phones. Its one thing playing with tech & discovery, another thing having your first sexual experience be on a screen, as a child. It has lasting affects on your development.
Oh, and a good chunk of abuse happens by friends & family, not strangers.