It has been announced since last year, I think it was summer 2019 when it was being discussed how to go about the burn process.
You claim that burn deadline was announced since last year? No. It was announced 4 DAYS before happening.
The announcement was back in December 2019, then I burned my Qora. You did not follow the project, it is your fault. But you can enter the project now by creating a minting node.