There is a common complaint I get from the public: scientists who know the most about a topic are often the least able to give people a straight answer.
We know this is true, but we also know science can be complex. We all want the easy narrative, the definitive response, but that is not always realistic.
However, it is almost always necessary because regulations will happen.
When the public read ambiguous answers from experts, they begin to tone them out. If they read an article about Chemical X where a scientist states, "there is no conclusive research that shows Chemical X is linked to greater adverse outcomes" and then they read an environmental lawyer who states, "Scientists agree that Chemical X may be causing these cancers", they side with environmentalists...