ZSJ vs OC is not needed for this PPV. They could've just given them a Dynamite 20 min main event to hype up the "AEW vs New Japan" theme or something.
Strangely enough, I'd also argue Dragon vs Shingo wasn't necessarily needed either but like I said in the other thread, I think Danielson is banged up and TK wanted to save him for as long as possible so he could use him at the PPV.