Judging by Fernanado's comments about "Vinyl, release, etc.", I'm inclined to believe that Hardschool was being soundchecked last year and being prepared as the lead single; being it sounds more like "GN'R". I think the promotion was delayed due to COVID. I read his comments as promotion was being done for Hardschool, hence they didn't want to waste the opportunity on half filled, COVID restricted stadiums. Enter Absurd as a replacement for something new to draw people but they didn't want to waste the promotion for Hardschool with so much other news in the world.