"For years, the fields of information science, information retrieval, and human-computer interaction have studied how people make use of search systems and have investigated ways to improve search interfaces. The integration of generative AI chat components is a major development that may profoundly change the way users interact with search systems."
The people being studied can only make use of what's there and can't make use of what's not there. If what's there doesn't offer decent filtering facilities which respect logical operators such research can't show people making use of them. If the research shows that what people are using tries and fails to double guess what they want then obviously it will point to using AI to make even worse guesses.