The "Coe Model", quality training & quality rest, is the same one James Li uses on Lagat, which obviously works up to 5k.
LRC's mantra of "strength=speed" equivocates strength and endurance to a fallacious equivalence. Strength is the ability generate force. Endurance is the capacity to sustain the generation of force. LRC's mistake is thinking muscle fiber recruitment from endurance training is the same as muscle fiber improvement from speed training. Long, slow distance will help ensure you are able to use speed when tired (muscle fiber recruitment), but it does not improve your top speed and acceleration (muscle fiber improvement).
Why doesn't Usain Bolt run 100 mpw? Because long, slow distance does not improve your speed and acceleration.
Why does Lagat run 60-70 mpw at a quality pace? Because long, slow distance does not improve your speed and acceleration.
Why doesn't Lagat run 100 mpw? The same reason Geb doesn't do 200 meter repeats (regularly). Because strength (speed) and endurance fall on opposite ends of a continuum. Each event has an optimal range of the speed to endurance ratio on that continuum, and depending on how the tactics unfold, athletes will be an advantage or disadvantage based on their ratio.
This is the most succinct summary of the Coe school, and refutation of the Lydard school (that Kellog plagiarises) that I could write.