Never underestimate the power of coincidence - while the rate of injuries is too high IMO the distribution of them does tend to be consistent with random draw. The human mind is primed to spot patterns, so often spots ones that aren't there (after all, if it looks like there might be a leopard up that tree it's smarter to go elsewhere).
I'm currently sitting on 14 injuries from 16 days this season, which is a blip - I only had 24 injuries in the whole of the previous 2 seasons.
Every season you see people on here complaining about injuries, but the specific people complaining tends to change, as you tend to get 1 or 2 better seasons, then a bad one.