The way this video is presented is very misleading. I didn't like it at all.
As I actually mentioned it in my post, dark matter theories are well alive, and the proof is data. This does of course not forbid the existence of alternative theories (as again, said in my post), as we cannot disentangle both hypotheses today. Now, the second part of the video is also misleading. For the missing baryon issue, please have a look to my post of last week. This has nothing to do with dark matter, contrary to what the video says...