Rock isn't dead; it just ossified.

Modern rock in 2022 is mostly modern rock in 2012.

Who played the previous festivals?

Almost Acoustic Christmas 2018: Death Cab for Cutie, Chvrches, The Interrupters…
Almost Acoustic Christmas 2019: The Interrupters, Jimmy Eat World, Twenty One Pilots…
ALTer Ego 2020: Coldplay, The Black Keys…
ALTer Ego 2022: Coldplay, Twenty One Pilots, Imagine Dragons, Måneskin…

Half of the ALTer Ego 2023 line-up has headlined Coachella.