Yes, unlawful carnal knowledge is a child sex offense.

The way the system works, many child sex offenders are considered paedophiles, but all offenders earn themselves a spot on the registry.

If the person has pleaded guilty, it doesn't matter.

Not all child sex offenders are paedophiles. A lot are simply "child sex offenders".

I've not heard of any case where a genuine paedophile attacks a child of 15.

But DoCS label everyone.