There were a couple of things that I noticed that I don't think are correct. I thought it was fine up through the first 3, more or less. One issue that kind of bugged me was that it seemed to imply that spaces cannot be curved. The video I think would suggest that the surface of a sphere is 3-dimensional when it's actually only 2. Calling infinity a point in the seventh dimension also bugged me.

Overall, it seems like the creator of it knew a little bit of math, and probably some physics, and extrapolated from there. More probable though is that their only knowledge of the subject came from philosophy, or epistemology.