That doesn't solve the problem they're trying to solve, which is their all-volunteer staff is being flooded with LLM slop and doesn't have the time to artistically moderate.
If you want to blame someone, blame all the people LARPing as AI researchers.
The majority of these submissions are not from anonymous trolls. They're from identifiable individuals who are trying to game metrics. The threat of boosting their number of plagiarism offences on public record would deter such individuals quite effectively.
Meanwhile, banning review articles written by humans would be harmful in many fields. I'm not in CPSC, but I'd hate to see this policy become the norm for all disciplines.