In films you're caught in a representational world that costs money. Jim Henson broke it open, Spitting Image made it venemous. Green Ginger take it back to the world of the macabre. Like in cartoons you can do violent, awful things and play with disturbing ideas without people vomiting in the aisles. I also love the idea of a travelling show - pack up a few trunks and move on.
Films are heavy lumbering vehicles.
These guys get direct reaction from the audience, except that they hide and let their hands do the dirty work. One has to support that world because it's free from sponsorship and TV censorship. Puppetry lures children in. My son was entranced by these pieces of latex and how they became animate. Just watch the kids' eyes light up.