I don't have a concern with the "white, male power structures" focus of the novel (you can easily use it as a critique of same, which I am fine with). But frankly, I always considered it over-rated and profoundly British (i.e., English)-centric. It had damned little to do with my life-experience growing up in East Texas.
“The Ottawa School Board removed the classic, Lord of the Flies, from its curriculum after its advisory committee on equity agreed with a student who said the book’s themes were outdated and too focused on white, male power structures.”— Nicholas A. Christakis (@NAChristakis) October 28, 2021
Other books recently removed from Canadian school libraries and/or curriculums in response to complaints about racist, homophobic, or misogynistic language and themes, include Harper Lee's To Kill A Mockingbird and Margaret Atwood's The Handmaid’s Tale.
Fear of themes is not really a reason to ban a book, unless those themes are pro-Nazi or pro-racism or something. Then again, I quit reading books from my school libraries in junior high (I almost remember the last book I read from that library. Or I think I do.) My friends and I read widely, but mostly we purchased the books we read, or we got them at the public library. Almost nobody read the books in the school libraries, so it little mattered what was there. Banning books from schools doesn't mean you can't find them on Amazon, or at a bookstore. Keeping books out of school libraries has been going on since school libraries started.
Keeping them wholly out of the hands of young minds, is another matter.