Its a good point this.
Sometimes teams can utilise the passion or unity of the crowd in difficult moments. If the crowd can get behind the team and manager then these moments pass.
The unfortunate thing for Benitez is that the crowd will probably never be unified behind him and the chance of a passionate, immersive Goodison getting the team over the line is minimal.
Quick point to illustrate your example. When Conte took over at Chelsea he pushed his players to sprint more and then used the reaction of the crowd to drill his point home at training. Paraphrasing, but something like "you heard how the crowd wanted you to play, so that's how you play."
It's a shame Conte isn't here because he could use the crowd telling Iwobi to F-off to illustrate the same point.
The crowd will never get behind the manager and that was why this appointment was such a strange one. If you're the chairman, director of football and there is a chance that the money isn't going to be there to back your new guy then you go with someone who will at least have some goodwill from the crowd.
Moshiri, Brands, Benitez they can all do one.