To chamber a kick is like to
- raise your fist,
- move your fist back behind your head,
- you then punch out.
In a fight, you may not have the luxury to do that much "compressing" before 'releasing". What you have done just violate the "shortest distance between 2 points" guideline.
If you and your opponent have the same speed. You chamber your kick but he doesn't. If you two start the kick at the same time, his kick will get you first.
For a Shuai-Chiao and Longfist guy who says he hasn't done Wing Chun since his grad school days many decades ago, you still sound a lot like a Wing Chun guy, John!
Like you, we are constantly saying, "No retraction!" and "Every step a kick, every kick a step!", and of course, we never pull back before punching, instead we say, "Others walk the bow, we walk the string" since, "the shortest distance between two points is a straight line". And finally, just as you said above, we use efficiency to "Start later, arrive first!"
So ...I guess this kinda thinking is not just WC stuff, but used in a lot of Chinese Martial Arts!
BTW the "every kick a step" thing, where we extend our kick and then drop it firmly to the ground, is essential to maintaining our
forward pressure and closing. It doesn't mess up our stances or leave us particularly vulnerable to a sweep, since our stances are very different from TKD and Karate, being more back weighted. Personally, I find grapplers to be more of a threat at the range we favor. And boxers. Yep, boxers hurt.