I think the character of Ricky Fitts in American Beauty is an INFJ. I think what he gets from the plastic bag video is a way to get round his feelings of alienation and daily problems. It’s not what the blown bag is literally (as a sensor would typically see) but the effect it has on some observers. Like visual poetry it can take you into a different cognitive experience and allow you to perceive more deeply, or act in a hypnotic way. If it was a ballet scene, it wouldn’t cause controversy or much criticism, but the fact it’s an ordinary bag in a mundane environment leads to the confusion, but it also is a hint that there can be hidden beauty in ordinary things, or simply benefits to perceiving them differently, like Keating getting his students to stand on their desks in Dead Poet’s Society. The bag could act as a metaphor like he feels it’s how his soul is, or it reminds him to let it be sometimes and stop worrying so much. What will be will be.