where does that "drawing" come from?
the video where Marc Dillon answers a few questions is somewhat older, but even during / shortly after "love day" plenty of time closing app was shown as pressing on the "app view" (any app?) for some time & then hit (X); on top of the screen appears a (Close all) button.
think it would be faster to close one app by pressing on it & swype down then this "holding for a few seconds" & press (X), no?