Thats a pretty cynical take. The likely overly optimistic take would be that it would provide a level of usefulness of a highly paid and highly competent personal assistant.
Unless they never manage to reign in the costs, then it will be more out-of-reach than a real human, disregarding the potential game-changing element of real human empathy.
I would expect those that have funds to spare already have both, regardless of the limitations of each.
If you can come up with a possible downside, that would be something to compare it against.
Everyone might not have to be cynical for their opinions of the potential outcome to be either positive or negative.