I assume you're talking about the Anomaly icon, which is the only one without gameplay (and is also the third icon, but maybe that changed). I'm not sure why you'd base your opinion of a game, let alone the continued success of the bundle and the indie game industry itself on the content of a single video link. The Humble Bundle continues to provide what it always has, and the game it promotes continue to be created by small independent studios, distributed DRM free on a large number of platforms. The choice of using a cinematic rather than gameplay video hardly impacts these other factors.

If you're concerned about the game itself, it's been out for a while on a number of platforms and is well-reviewed, so finding gameplay videos should not be difficult.