Does "Dark Matter" pose insurmontable problems, in epistemological terms, for Einstein's Theory of Relativity?

Einstein's Theory of Relativity is based on the notion that nothing can travel faster than the speed of light, because light is the fastest wave/particle in the electromagnetic spectrum, as we have understood it. Dark Matter represents 90% of the matter in the universe, but doesn't interact with light, at all, ever. It seems to exist entirely outside of the electromagnetic spetrum, as we have understood it. https://www.youtube.com/watch?v=aUtdLfdnpzs It seems to me, this is, at least from a philosophical point of view, a very straightforward and total disproof of Einstein's Theory of Relativity. I mean we can simply throw the Theory of Relativity out the window! Naturally, physicists disagree. The claim evidence consistent with Relativity from laboratory particle accelerator experiments, and microeffects in space. I would argue that these are probably artifactual experimental effects. What would be a philosophical perspective on this issue?