Part of me also wonders did she use the term headliner loosely.
We've always considered headliners to be the last act on the pyramid Fri-Mon but Emily may have included the legend slot (or even a slot like Lizzo this year, who was billed as a headliner weirdly)
Feels like there was pettiness on both sides.
Lana maybe being late due to her annoyance at her billing.
The organisers cutting her due to her lateness.
Only losers here are the fans - missed the best two songs of the set.