Okay so I watched some of your videos and I have come to a conclusion which I will explain by the following points:
- Good music, you take the music to good use, and it fits the videos.
- Good loud voice, your voice is relaxing to listen to..
- Your editing in the video is certainly good

- Your face seems like a face which can be easy to remember, you've got the perfect celebrity face man
I think the problem is that most of your videos are supposed to be towards people who also have Aspergers. Though your last video is more like a sketch, keep going with that and then your audience may grow