Did I ruin it... 😩

I'm a new-er user of the Blackstone but man I love the thing... I thought I'd been extra careful and thorough with cleaning and scraping and seasoning etc but after a long summer of use this past summer, id given it a clean up on the last night before I was going to store it for the winter and it started flaking on me... I thought maybe I was seeing burned on food or sauce but it just kept peeling. I told myself "just clean it up best you can and we'll come back and see what's going on"... That thought got replaced with concern and dread that I'd destroyed the grill and I've left it stored and covered ever since. Today I opened it up because man I wanna use it and this is what it looks like TODAY... is this dead? Can it be saved? What do I do guys? 😭