Ok, so I get that fake polls help Hillary stimulate a stampede of middle east pay to play cash, but beyond that, giving your base a sense of complacency does nothing to help your campaign.
Have you seen her campaign staff? She laps up everything those sycophants tell her.
If it provides a sense of inevitability, it can demoralize your opponents and possibly reduce their turnout.
Hillary is such a horrible candidate that they haven’t been able to keep up the facade though.