I again that the death possibility is not what the focus should be on. I agree if you are only worried about dying from it, I would tell everyone to drop this topic.
As mentioned, the fact the is getting lost is that hyponatremia doesn't only equal death. It's like saying only dehrydration equals death so we shouldn't worry about it either.
Both of these conditions occur 1000's of time at WDW in Jan. All on different levels. The lower levels effect performance. Isn't that something everyone should be concerned about? If you have to go slower or don't feel great, doesn't that matter?
At moderate levels, if it causes you to be light headed, sick to your stomach, and prevent you from finishing a race. Isn't this a concern for EVERYONE?
Yes, you have a greater chance of dying in a car accident. What we need to understand if we want to have a good race, finish strong, and finish, we have to learn of all the conditions that prevent this. We need to understand the symptoms and how to correct. This can be done on the fly during the race if we are prepared. If we don't care because it won't kill us, then go ahead and not prepare.
Hyponatremia happens all the time at races(not like a lightening strike), it just how bad it hits you. Death is rare but that isn't the only concern!