This part is really ironic. What's your excuse about Zoro being trashed as well? That's the third opponent in which Zoro was unable to cover his body with hardening, I can play the same game, dude.
Katakuri himself confirmed that Luffy can see the same future like him. Are you really disregarding manga facts because it does not support your fanfiction about "plot elements"?
This is just another conjecture based on nothing.
I don't care what Zoro dodged before the TS, is this some dick measuring contest, or what? You are too much obsessed with Zoro vs Luffy, lmao. My initial point was that FSless Luffy dodged an explosion much bigger than this one without problems in which this entire scene does not make sense from begin with, you follow?
That's why Zoro did not cover his body in CoA against all of his opponents? Zoro's CoA is just a plot element after all. Imagine hating a character so much, you have to use a controversial feat, in which both Luffy and Zoro were used as hypetools, just to justify your baseless headcanon about Luffy's FS.
Don't worry fam, you simply have to swallow your L like I do. Luffy and Zoro were simply hypetools for Apoo and Apoo was a hypetool for Kidd.