That's fine. I also don't like the idea of a group of people broadly dictating what can and cannot be read.
But this specific book, All Boys Aren't Blue; is it appropriate for school children? That's a yes or no question.
I will say this: it's OK to be aligned from time to time with people you would otherwise vehemently disagree with. A broken clock is right twice a day. If your position is that Ziegler is on a crusade as a member of the CFTOD board to somehow reform Disney much in the same way that she is trying to reform school libraries, I'd posit that knowing the specifics of what she is doing in school libraries is important.