Lower skilled than office clerks and customer service representatives? Because they were in the study.
But, the study is also about LLMs currently impacting wages and hours. We're still in the process of creating targeted models for many domains. It's entirely possible the customer representatives and clerks will start to be replaced in part by AI tools. It also seems that the current increase in work could mean that headcount is kept flat, which is great for a business, but bad for employment.