Not really a personal attack to point out that you were what? 16 or 17 going into the pandemic. The 3 announcements post pandemic make up most/all of your reference for announcements.
2015 | Nov 2014
2016 | Dec 2015
2017 | Dec 2016
2018 | Feb 2018
2019 | Nov 2018
2020 | Feb 2020
5 festivals prior to covid, 3 being announced between the end of November and the start of December.
The 3 post covid were the start of December/ end of November.
You were about 11 in 2014 when Metallica were announced? I sincerely doubt that you remember when that festivals was announced, nor any before that.