A shame this is turning into 411a bashing, although he is being a little harsh before the facts are all in.
I was told a while ago that you make a decision before you call the company.
If the cc had only 6 months of experience, if he/she heard a scrape on rotation, then it's still a scrape, if he/she isnt fit to report a problem to the fltcrew, he/she shouldn't be there otherwise.
Let the lawyers figure out the difference between scrape and strike but I think I would have turned back.
I hope the facts will be different than what they seem, but if they are not, the people upstairs should make some changes to the system.
Especially in these vague cases it is important that the captain makes the right call.