Regarding the Derby officials. I was there. I thought there were some questionable calls. The calls at the 152 final have been beaten to death on this forum. Even submitted to another board, in another state that has mostly wrestling officials. Most of them agreed that the final at 152 was called correctly. As was stated by the poster of that great link, the people at that forum were knowledgeable and objective because 'they had no horse in the race.'
Have you ever reffed a match before? It is very, very hard. I have done it before. One year was enough for me. I was not very good at it.
Try it yourself for a year -- then see if you develop a little empathy for the zebras. Without them, we have no sport. They are not perfect, nobody is. But, for the most part, they do a good job.