I thinkt he book awards can do whatever they like, and are within their rights. But it was the wrong decision. As far as I know Drew didnt hire any non-union writers, nor as she personally violated any of their asks... She is perfectly ok.
The bigger issue is the cancel culture, I know I will not give any attention to the book awards (As is my right) due to this decision.
You seem mistaken on what the term "Cancel Culture" means. A culture in which reasonable and occasional boycotts are employed is NOT cancel culture... thats just boycotting and its been around forever and its perfectly fine.
Cancel Culture is pointing out a culture where **frivolous** boycotting is central the the culture.
The distinction is important to having a productive conversation here.