My experience is different. I have many times reported a profile like this. Exactly as described above, a child can see it's a scam account. And then a couple of days later got message that after review the profile doesn't violate the community standards.
really? That's very odd (not that their reporting system sucks, it definitely does), but that you need to report it.
Interesting that we have such different experiences, I wonder why that is. (remember that on FB, a 1 in a million event occurs approximately 3k times per day).