Thread:Omega64/@comment-4503935-20190703001710/@comment-10330822-20190705041055

I did. Because Haki blooms with adversity, so Luffy's situation would allow him to make gains in that field depending on his enemy.

The issue though is that fighting hundreds and hundreds of opponents doesn't necessarily produce that. Since Haki is the product of the spirit rather than the body, you need to be pressured to expand and perfect it.

In the last few chapters, we've seen this, as it was the panic of freeing Old Man Hyo from the slave collars that caused him to jump three levels and achieve the "Armament Chanelling" feat that Hyo states is even harder than the expanded haki armor that Luffy was already trying to learn.