Not wanting to play the devil's advocate here but though scummy, they still successfully introduced vulnerabilities to the kernel. Suppose the paper hadn't been released or an adversary had done it. How long they'll be lingering around if they're ever removed? The paper makes a case that FOSS projects shouldn't merely trust authority for security (neither the ones submitting or the ones reviewing) but utilize tools t…
The paper doesn't actually have concrete suggestions for tools, just hand-waving about "use static analysis tools, better than the ones you already use" and "use fuzzers, better than those that already exist."
The work was a stunt to draw attention to the problem of malicious committers. In that regard, it was perhaps successful. The authors' first recommendation is for the kernel community to increase accountability and liability for malicious committers, and GregKH is doing a fantastic job at that by holding umn.edu accountable.