Rewatched the video, and you can even see the drawing on the bag showing proper use. I'm sure in a panic you're not thinking but still...I agree, they tell you

Rewatched the video, and you can even see the drawing on the bag showing proper use. I'm sure in a panic you're not thinking but still...I agree, they tell you this stuff for a reason - I fully read the safety card every time: for example, some planes will sink if you open the rear exit in a water landing!