Technically, of course, this is time-lapse video, not stop-motion. Stop-motion slows things down (hence the name); time-lapse speeds them up, which is clearly what's happened here.
Terminological pickiness aside, this is very cool. I wasn't aware of Kina Grannis before, and probably would have stayed that way but for this video, so it seems to be accomplishing its purpose.
That's just wrong. Overcraking (running the film through the camera faster than normal) slows motion down. Undercranking speeds it up.
Stop-motion doesn't slow things down; it's a technique where you expose one frame of film, move something (usually a model) slightly, and expose the next frame.
Stop-motion animation examples include the original King Kong, Sinbad and all those other Ray Harryhausen films, the AT-ATs in Empire Strikes Back. (And there was also a technique called "Go motion" animation where the puppet was moved during the frame exposure, thus causing motion blur, and making for a much more realistic animation, which was used for the dragon in DragonSlayer and I think some of Return of the Jedi.)
If you want to get really pedantic, probably the best term for this jellybean video is "pixilation". I know we use that word differently nowadays, but before computer graphics were common, "pixilation" was the term for stop-motion animated real-world objects.
Terminological pickiness aside, this is very cool. I wasn't aware of Kina Grannis before, and probably would have stayed that way but for this video, so it seems to be accomplishing its purpose.
Edited to add: the song is pretty, too.