Bear in mind that those capillaries are only around the diameter of a red blood cell. It wouldn't be a major problem; nor a dead end, since other blood vessels would be sufficient to carry the traffic.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'