> so it's really unfortunate that I can barely tell what this really does or why we should care

It takes an image as input and produces a "dramatic" copy of that image in which "dramatic" is defined as being angled away from the viewer on two planes and having a blur somewhat consistent with it having been photographed with a shallow depth of field.

I'm surprised to read this — while the examples could be more cleanly presented, I felt like the title for this post and the initial gif on landing show what this does reasonably clearly. I do see what you mean about the PRO part.