I don't think the above poster is talking about finding novel treatments, but rather that they're talking about aiding in diagnosis and navigating existing treatment options.

We always wish that our doctors would stay up to date on all of the current medical literature as they practice, and some of them do. In theory, AI systems could greatly accelerate a person's ability to retrieve and extract insights from the current body of knowledge.

Of course, that is highly fraught, but, in theory, I think I see what they're going for.