Well not really. If a system does not have dislikes then people will find other metrics to evaluate what's good. For example Likes/Views ratio. If a video ha

Well not really. If a system does not have dislikes then people will find other metrics to evaluate what's good. For example Likes/Views ratio. If a video has 1M views but 1000 likes I can most likely ignore it If a video has 1500 views but 1000 likes now that's something I should be looking at