I completely agree with the OP, I find this very annoying. Fishing for interaction on the video, it has nothing to do with data analysis as others have pointed out, there would be no way of separating a genuine like for what was seen versus interest in the proposed 'other' video. Now I'm too confused to choose, I liked a video but I don't like the proposed new topic, whatever should I do!!
Not choose perhaps, I wouldn't want to muddy the results.