It really is time for people to stop trying to justify Korns headliner slot just because they like them. Having a huge catalogue doesn’t make a headliner worthy catalogue either. No-one is denying they are popular and would get a big crowd but they've absolutely been chosen rather than going through a lot again.
Skindred a massive example of should they be headlining.
In reality Korn should have done it if they were going to in 2017 with SOAD and Aerosmith off the back of the co-headline tour in 2016 I feel.
Plenty of bands pull bigger crowds than headliners, doesn’t mean they sell more tickets. Do you want Skindred to headline by that metric?
Their last album was released Feb 2022, they last played Download in June 2022, so no they haven’t.
I’m not knocking them, they were brilliant on this last tour. But, size wise they are absolutely a weak headliner by any standard for Download.