Voadam
Legend
When they use DRM to erase the thing from your hard drive, then it is like book burning. When they send jackbooted thugs into your home to take and burn your physical copy, it is like book burning.
If WotC publicly burned all hypothetical unsold stock of OA from an old warehouse that would not be book burning because they did not go into peoples homes and take home copies to burn as well?
I picture American book burning as people publicly burning books (Harry Potter, Huckleberry Finn, lewd stuff, Communist stuff, D&D, whatever) to show how much they stand against the bad/dangerous/harmful stuff inside the books.