Of course there are girls who are sexually active at a young age. That does not mean that they are not protected in law, however. The age of consent still applies, and a man having sex with them is breaking the law.
If that 'man' is a couple of years older than the girl, it is understandable - it's what Nature is telling them to do - but if the man is old enough to have teenage daughters of his own (hypothetically, of course), he is culpable, and the situation changes from one of adolescent experimentation to one of exploitation.
If the man is wealthy and glamorous and the girl is poor, the situation becomes even more exploitative. If the girl is told that by giving massages to the man and his equally exploitative mates she will earn money to pay for an education she would otherwise go without, and these massages gradually go further she is being pimped, and if she then gets caught up in a world with people she believes are her friends, she is being cruelly deceived.
At no stage is the child culpable.
As for men who have sex with 'scrubbers' - how is what they are doing any different from what the girls are doing. If it is all consensual, and there is no deceit involved then presumably they just all enjoy sex. It's true that I wouldn't like to think my daughter would be indiscriminate in her partners (it is usually a sign of low self-esteem), but I would never use a word like 'scrubber'. Horrible.