I mean, yes, she was being challenged. But she was being challenged in such a way that any disagreement with the challenge was met with a tsunami of outraged disgust. There were two sides in the discussion (even among people who felt that Clanchy’s comments were wrong) but any expression of an alternative view was treated by one side on the debate (and not the other) as a visceral personal attack. Which it wasn’t. There is such a thing as free speech that others find offensive, and they are entitled to say they find it offensive, but then others are entitled to say they don’t as well.
That simply is not accurate though. If anything it was the opposite way round.
Clanchy wasn't "challenged", she had a single bad review online, by a regular member of the public. Nobody tweeted her, emailed her, contacted her publisher, came to her directly. Clanchy tried to oppress a reader's right to free speech because she couldn't handle a negative review which she'd actively sought out.
The "tsunami of outraged disgust" was aimed at anyone who critiqued Clanchy's book, not the opposite way round.
any expression of an alternative view was treated by one side on the debate (and not the other) as a visceral personal attack.
That is literally what Kate Clanchy did: lied that she was being personally attacked and treated alternate views on her book as a visceral personal attack.
others are entitled to say they don’t as well.
Who's saying they aren't?
I have not seen a single person say "I have read the book and I personally don't find it offensive to make sexualised comments about young girls, claim someone with a big nose must be lying about not being Jewish, and make comments about raped children's bodies". Many of Clanchy's supporters don't seem to be interested in engaging with the content of the book, but either ranting about "cancel culture" and "wokeness" (putting ideology above facts) or cherry picking a couple of quotes from the book about skin colour and ignoring the rest.