So you are using a LEO example and the LEO training failure in a self defense situation to argue that "not all arts are meant for SD", that many "have sole or strong sport elements such as Judo, BJJ and TKD" and "they do great in sport venues"? If anything, your example goes to the ineffectiveness of "self defense" training even for LEOs, and has nothing to do with "sport".
No sir, you've missed the point. Arts that were designed specifically for sport, or have a strong sport element, were designed for an artificial environment. This isn't a snipe, I'm presenting fact. As an example, these sports or sport elements conduct their training/competition in a venue where there is one opponent. The opponent is not armed. The opponent has agreed to the same rules as you. You may have a time out or time in between rounds. The venue is well lit, flat, dry and depending on the sport, it may be padded or the participants may wear protective clothing/equipment. Thus training for this venue differs as there are not as many possible variables that exist in which to confront a participant.
Now take this to a real world SD altercation. None of the above may or will apply regardless of L.E.O. or private citizen. The training will differ. And because it differs, training for sport may actually be a detriment in a real altercation since we react under stress and revert to our training. Again, this isn't a snipe at sport training, rather it is illustrating the difference. The examples I (and others) cited above happened decades ago and SD training has advance exponentially as a result.
As an example, BJJ has a lot of ground work. A lot of it is great, and a lot of it only has sport applications and do not translate well over to SD. This is why Royce Gracie had to change many elements of BJJ for the use of officers. Taking someone down and putting them in a triangle, komora or cross-body mount is great for the ring but can be a very bad choice in the street due to a plethora of circumstances. TKD if trained as far as many kicks/little handwork can also be great in a specific venue but a really bad choice in a real altercation. Again...NO snipe, just looking at it realistically. Being a great kicker in competition is great. But lets look at this honestly, the kicker is warmed up, in loose fitting clothing, on a flat, dry surface in a well lit area and the opponent is the same. Translate this to being confronted/attacked between a couple of parked cars, or on a stairwell, or in an elevator or other enclosed area, or a sloping/slick/wet surface and the person is not warmed up/stretched out and in a dress or jeans. Things become very difficult, very quickly.
Now, if someone is training solely for sport or exercise or social interaction then there is no real need to worry about it. As noted more than once, by many posters here, the problem comes up when one methodology claims to be good for another venue. It is NOT an 'us vs. you' situation. At least it shouldn't be and isn't on my part. It is serious dialogue on a serious topic that all of us should thoughtfully consider. If one trains for SD, or if one trains for sport but would like to put SD elements into the training then they should look seriously at what those in SD teach and why. Learn from mistakes so they aren't repeated. It would be silly for me to teach sport without getting a good grasp of what is required in that venue. Conversely, it would be silly for a sport instructor to teach SD without getting a good grasp of what SD requires.
We should all be here for each other and assist each other if it is within our power to do so. Many of us are 'masters' and as such, we should conduct ourselves accordingly for the benefit of our students. If a school is sport-only and the students are fine with that, great. If on the other hand a sport school wanted to put in some SD and wanted information on goods ways to do so....ask. I'm here for them to the best of my ability. I think other SD folks here would feel the same way.