It is very asymmetric. The supposed rightsholder just has to fill out an online form or make an automated API request to take down content in an often automated

It is very asymmetric. The supposed rightsholder just has to fill out an online form or make an automated API request to take down content in an often automated, guilty-until-proven-innocent system. But to dispute a claim the supposed violoter has to go through a much more arduous process with limited information. To seek accountability of a false claim, they must go to the courts which are innocent until proven guilty, and will take significant time and money to pursue. And the claimant can just claim it was a mistake. That may even be true. After all there isn't an incentive to put any effort into making sure your claim is valid before making it.