Flexible sledgehammer - GIF and videos

[Jon]

Flexible sledgehammer. I'm not sure what to think of this.



More. 13-second video:

It still doesn't beat the awesome team sledgehammer internet classic, now appropriately retitled "Hammertime". 42-second video:

Is there a legitimate advantage to a flexible hammer? Does that advantage only apply to a large swing? Is it acting like a wrecking ball? What about just a little flexibility; is that helpful? Could you argue that, in the Hammertime video, the workers' bodies are essentially acting like a flexing handle?