They are quite luck to have the full DMCA process, as unpleasant and costly as it all is for them, at all! Most are not so lucky.
That is factually incorrect.
Content ID claims can be appealed to the claimant. If that appeal is rejected, the person who posted the content can contest the claim. Doing so forces the rights holder to either drop the claim, or file a DMCA takedown.
I am a full-time YouTuber. I have recently done what I just wrote. It's nothing new.
In addition the percentage of people unwilling to risk the legal complications of defending a full fair use court fight, as it is an affirmative defence relying on courts with the USA as the jurisdiction is a widely chilling effect on overseas content producers. If they don’t back down you need to be prepared to deal with American courts and lawyers. Sure they back down some of the time but a lot of people don’t even want to risk it or aren’t even sure how firmly they are in fair use territory and that’s not even brining into the equation how many people misunderstand fair use exemptions and just how might right to reuse content under fair use they actually have and who may be inadvertently risking significant legal exposure should they try to press invalid fair use claims.
I did misspeak, but ContentID is still the bigger evil than the DMCA.
I see a lot of this, including by very large channels who know what they are doing and should know better. And it seems to be an increasing trend. I don't like it.