I've seen several documented cases of DMCA abuse but I haven't seen a single case where a major company was punished for it, and I doubt they'd face any consequences substantial enough to overshadow the profits they've made abusing the process. If you've got examples though I'd love to see them.
But extreme negligence is 100% allowed, so that clause doesn't matter.
Such actions should void the copyright on the claimed media, either make a DMCA or put up with it. The use of this "side-channel with a supposition of benefit to favour media corps and no proper defense review or resolution" perverts the copyright system's balance in providing a deal between the demos and the creators (and other rights acquirers).
Google's facilitation of this (instigation?) IMO shows they've come along way from 'don't be evil'.
Issuing a DMCA takedown that is both false and meant in bad faith is an act of perjury. In theory the copyright holder could get jail time.
A interesting case is the video of a toddler dancing on youtube, 29s long, to a song. The Ninth Circuit held that copyright owners must consider fair use before issuing take-down notices. The case got settled afterwards.
This difference between DMCA takedown and ID claim is often discussed by youtube creators as both a boon and a curse. The good thing is that id claim does not impact any future standing with google or legal punishment beyond the loss of revenue from the video that get claimed. The bad side is that they get abused.