Dark Matter Part 2
The good and bad about dark matter is that it can be used to explain a lot of things. Yet science inaccurately might tend to use it as a catchall for numerous different things they cannot explain. This is why it falls under the science rabbit hole concept, as it cannot always be the default answer. Though it is useful sometimes. For example, when there are certain gravitational effects that cannot be explained by our current knowledge of gravity, it can then be said that dark matter played a role.
It is called dark because this particular matter does not interact with our electromagnetic field. Since it does not absorb, reflect, or emit electromagnetic radiation, it is harder to detect. Yet if we can detect some form of matter itself, then we obviously know it is not dark. This is why we can see this concept with gravity and even other stuff too, but it simply cannot be a catchall.