Yes those are very good points - The first that yes, there are certain things that tend to create a natural excitement that is exploited, without the awareness of the "viewers".
With regards to including certain scenes in order to prompt people to feel that the movie is better than they otherwise may have thought is a form of priming, a psychological term that can be explored a bit here: https://en.wikipedia.org/wiki/Priming_(psychology)
There is so much that takes place in our society that influences and impulses us on sub and unconscious levels. The more we start practicing an awareness of this being done, the more we can determine, with awareness, what does and what does not influence our thoughts, behaviour and words. Thank you for your comment :)