Ok, actually watched the film. Here are my raw thoughts as someone who despises bad or fake tickling scenes.
First, the film is really very good and an original and relevant concept. I would recommend the movie without the tickling for what that is worth.
I felt the tickling scenes, two primary, one m/f, and one f/m were very good and important to the film. The first scene was quick, and has been shared here but is real tickling and she doesn't seem to be faking if you look at the facial expressions. The real "fetishy" scene is the f/m. It is long, drawn out (all upperbody), and she seems to take great joy in tickling the male character. The tickling is a pervasive theme through the movie, and I do feel it is an important mainstream film for the community.