The bit about Luffy losing haki and a foothold seems like fake news...
The end of the chapter, it's just Kaido saying:
"The result was as expected...you got your hands on a powerful weapon... and then got carried away, boy...!!
Humans never lose hope, that's their issue...
It's been a while since I've been this fired up... but I've made a mistake, I should have cut off your head and declared 'victory'.
Because people won't stop believing in you, right?"