It’s really not about Haki > devil fruits or vice versa, it’s about illiterate readers monopolizing Haki.
This misconception of Haki being an exclusive power that can't coexist with devil fruits sparked ever since Kaido's comment about Roger, when in reality it was just to show that Haki is an open-ended booster for one's fighting style.
Take away Gryphon and Yoru, and Shanks/Mihawk wouldn’t utilize their Haki to the fullest.
DFs, blades, guns, all are tools that can be used in conjunction with Haki, heck the move that clapped Kaido was DF/Haki hybrid. It's like saying building muscle is better than mastering swordsmanship, when there's nothing stopping one from doing both.
A literal DF merchant like Joy Boy has the on-panel best Haki feat in series.