Is a 19 year old dating and having relations with a 17 year old or a 16 year old pedophilia? Depending on the state and other activities (taking pictures, sending texts, etc.) it most certainly can be. It doesn't matter if they are in love and getting married with both families' blessings. Should such an individual be prosecuted, deemed an offender and placed on the pedo list for the rest of their lives?
And a few generations ago this was how everyone got married - young to very young girls/women with older men. This practice still occurs in many areas of the planet; it is accepted. We may not like it and wish that they could 'evolve' as we have, but many practices that we condemn and place pejorative adjectives on are still considered normal and acceptable in many areas. That, IMHO, is what Dawkins is referring to. Having these types of discussions can be valuable, but not if those like Chrisuk and VG are hysterical reactionaries painting with broad brushes and making very awful accusations.
And Chrisuk, please don't call me an idiot like VG does. I am 100% spot on and accurate. I hate pedophiles, probably more than you, but I love justice and fair-mindedness more.