I totally disagree. Length doesn't matter. The experience matters, the gameplay matters. Length is totally subjective. For example, some have said Gunpoint is only three hours long. But I get many more hours of gameplay out of the experience because I replay levels to ghost them or finish them as fast as possible or just play around with the Crosslink
The Swamper, Limbo, Journey, Shelter are short, but are they lesser experiences, less rewarding, because of that? If a game is only four hours long, but offers a thrilling gripping narrative or wonderful art or immersive atmosphere or deep gameplay, should a developer be constrained to a certain price because of length? The quality of the game always comes first and more often than not, a short game means a focused game, a lean experience without padding or bloat. As much as I enjoy 20 hour sprawling open world games, I'd take a short lean experience over one of those any day