They’re literally in Europe next June, doing the festival circuit and not playing either of those festivals.
Their European tour starts literally 3 days after Download finishes (and Nova Rock and Sweden Rock) so it’s not like they’re in Europe at the end of summer and it wouldn’t have worked with their schedule.
I do think they have a decent chance of coming back in 2023 but the logic of “they’re playing European festivals in June 2022 so therefore they’re nailed on to play other European festivals in June 2023” doesn’t stack up to me.