As a sole ML developer in a small company, I can't reach out to someone who can guide me specific to my problem. AI can definitely help but there is no human assurance providing guarantee of end result. I don't consider discussion websites or blogposts to be helpful because I have to personally learn from mistakes as I implement solutions.
As a generalist consultant, they would have seen many common problems across the industry and can cross pollinate ideas across industries. They will also develop a kind of tribal knowledge of dos, donts, best practices, best libraries so that I don't have to do it myself.