How the Edge of Our Galaxy Defies Known Physics

Videos like this only show that science doesn't know what its talking about, or even how to interpret the data it collects, in most cases. If you can't even comprehend dark matter, then your "evidence" is equivalent to a hypothesis that's barely supported by the data you can't crunch. The speed of parts of a galaxy do not point to the existence of dark matter, simply because without being able to observe dark matter, we can't with any certainty estimate how it affects "normal" matter, if even at all. This is wild speculation I would rank on the same level of "if there's wind, its evidence of god". I'm not saying dark matter doesn't exist. I'm saying that if it DOES exist, it is too far out of our comprehensive reach at this time to do anything but random speculation regarding it. But to be clear, just because a galaxy's edges behave different than you'd expect, or anything for that matter, doesn't mean you populate the theory with an unsupported idea. Now, based on what science says about what they believe dark matter to be, it appears to act almost like a liquid, which would tend to evenly distribute throughout the universe, similar to the water in the ocean. Currents here and there, different densities, etc etc, which would make it difficult for galaxies floating in the same "dark matter soup" as everything else to be absent of the soup within which they reside. Let me be blunt. Science is tripping over their shoelaces over conventional physics and quantum physics, and our "solar system" deep understanding of gravity. Tripping over our shoelaces means we don't fully understand what's right in front of our faces, and this, my friends, is clue number one as to why you have no  comprehension of dark matter. There are scientists that dispute the properties of electrons and protons. So let's work out the kinks of our local understanding before we try to dip our toes into the intergalactic composition of the universe, shall we? And as a side note, I'm all for speculation, dreaming, hypothesizing, etc, but we are literally making up the dark matter discussion as we go along.