Originally posted by John Bishop
Think about it.
1. Techniques that were deemed safe for competition were taken from the martial arts of jujitsu, to make Judo.
2. Judo instructors are called "coaches"
3. Progression thru the ranks is earned thru sport competition.
4. Judo practitioners are called "players".
Good points, but not necessarily ones that disqualify judo from being a MA.
As for judo being a safer version of jujitsu, realize that the techniques in judo can also be easily modified to make them more "street effective." Remember that when Kano removed techniques from Jujutsu, he was looking to keep techniques that made it safe for two relatively well-trained athletes to compete - that doesn't necessarily mean the techniques are safe when applied to the public at large. Before any judo techniques are learned and applied, judoka first learn to breakfall - a valuable skill that many people who have not studied MA's in which they are thrown never learn. Doing a simple throw from the "safer" judo curriculum on a person who does not know how to breakfall could be pretty deadly. Throwing a trained practitioner can also be deadly if, instead of being a sportsman, you throw them onto their head.
As far as the second and fourth points, the same can be said of some other arts as well, such as sambo, bjj, kickboxing, boxing and wrestling, as well as in some schools of TKD. Would they also be considered MA's? Just because they have a sporting component, that doesn't mean they can't be used for self-defense as well.
As for the third, competition is not mandatory for advancement. True, you will advance faster if you compete, but this is true for many arts -- the opportunity you get to develop your technique through competition helps you understand how to apply your techniques better, and thereby makes you a better practitioner - who will probably earn rank faster. It is, however, possible to advance in rank without competing. You would be tested on your knowledge of techniques, just like in many other arts.