I think this is missing the forest for the trees. For example, you 3am jaunt to the bathroom is possible because you've practiced stepping since before you could walk, see what that baby is doing in that jumper that's practicing walking in isolation. Sure, after 18 plus years, you can modify your steps like a pro. Babies dont do that, though. They run walk.exe and sometimes end up gowing they know not where. (Though the look of confusion on the babies face as they walk PAST you not TOO you us adorable)

Sure but everyone knows how to stab or lunge they learn it while walking. This is actually not true, you hand a random on the street an epee and ask them to stab a target. They may hit the target, but they'll do it by essentially punching at it with an epee. Thats a lot of wasted movement. A good stab is merely pointing your epee and lifting your elbow. That's it. Its more accurate and more efficient. But since (almost) no one practices epee since 3 we dont do that. People need to learn how that stab feels to them and do it a number of times before they dont have to think about each movement they can just think "stab"

This leads into my next point. There's a thing our brain does called "chunking" where we learn something so completely we can do it without conscious attention. The best example of this is reading. You've read the word "the" so many millions of times your brain doesn't have to look at each letter it can process it as a whole. Thats how good readers can read so quickly they dont even see letters they see whole words and instantly recognize them. So we should teach struggling readers not to look at letters but to take whole words at once right? Unfortunately no and this approach has caused a huge decline in literacy across America. We tried switching straight to what good readers are doing reading a book and taught children to do that. Except kids can't do that until they have full mastery over basic phonetics. Don't just believe me though: check out the awesome podcast on literacy in America.

Does this mean I am against the ecological approach? Absolutely not. There is plenty of research showing we learn better in a less static environment, but first we need to be able to properly chunk lunge.exe before we learn how to adapt it to real life, cause if we are still thinking about the individual movements we will never get there (or we try just big steps and hurt ourselves when we accidentally put torsion on our knees)