I disagree.
The wound in the Force is most definately a hole.
However, in general the Dark Side is not a hole per se. Imagine that you are standing submerged waist-deep in what appears to be an an endless ocean.
Every living being in the universe is also standing in the same ocean, so that the ocean connects all of you. The water that touches you also touches others, though those farther removed from you are harder to sense because of the distance. Ripples caused by them are all but dissipated at greater distances, unless your sensitivity is high.
A LS Force User merely senses the Force, and controls how it flows through them, allowing it to guide their body in tune with the nature of the Force. Since all life adds to the Force, the nature of the Force is to preserve life through a careful balance.
The DS notices this great power around them, and harnesses it, without care for the nature of the Force. The DS path is one of power because it is held back my objectivity. You harnass as much of it as you can, and redirect it, causing ripples at your whim.
Causing such turbulence in the ocean has its negative repercussions on the DS user, but the Force itself is not DS, nor a hole. The DS user touches and channels the same ocean, though they use it in a different fashion.