Actually I know a lot about this, I even wrote a guide about it here which I recommend you to read.
Claim is an automatic, fully algorythmic kind of inquiry made by CID which asks you for the proof of legal use of the song, e.g. a license.
Even if there is a fair use, algorhythm will make this inquiry. If you make a dispute, human from CID will solve the claim without loosing a cash from monetization.
Millions of Youtubers solve claims, it’s very easy.
I know it’s inconvienient but you may not know how music piracy is huge in the internet. Without CID there would be no stock sites, because everybody would use music illegally.
And one more thing. Youtube should place an info about CID during the video upload process to avoid confusion. And they should alllow to upload a license before the claim. They don’t do that because it’s a kind of strange conflict of interest and politics. Even though CID was made and is managed by Google/Youtube. Haawk is only an operator, one from many.