Lactate production and acidosis will always be connected as Lindinger informs us because of the Strong Ion Difference. It is a biochemical symbiosis (for want of a better word) preventing electrical forces from building up in solution. Lindinger also points out that protons may possibly not be transported out of the muscle cell by with lactate, or trasported across cell membranes, such as those of the mitochonria.
But whatever is going on, all we need to know for athletic training purposes is that acidosis is an indicator of failing muscle force production. The advantage being that the protons send a message signal to pain receptors, informing us of impending fatigue, hence the long standing assumption that H+ causes fatigue.
If we use that awareness to direct our training, then we can do more speed endurance work by avoiding the pain rather than trying to see how much we can endure pain, which is not an intelligent way to train. What I am suggesting is that progressively building the pace, but avoiding great fatigue allows us to do a very large volume of high intensity work. To promote the adaption to alos starting fast, we should also do speed endurance workouts where pace is constantly maintained, and a small amount of training where we are hanging on in the last 100m even though the pace is slowing.
There is nothing new in what I am suggesting, but, by applying more intelligence to the structure of these workouts, the possibilities for big improvements and injury/ilnees avoidance is considerable.
I think the term "flooding the muscles with lactate" is inappropriate. Bearing in mind that lactate metabolism is carbohydrate metabolim, that term is a relevant as saying "eat lots of carbs" It's what you do with that fuel that is important. How well you pace yourself in training and racing, and this superior pace judgement leads to adatpions in the nervous system which allow us to hold different paces for longer.