@sunglassesonthetable the OP does not explicitly state that she is or was trying to get the book withdrawn for the entire class. Your interpretation of her comments might be that was her intent, but she does not say this.
She does say that she is going to complain about the inappropriateness of the book for her child. Perhaps to question the book as appropriate content for 11 year olds full stop. I’d take that as part of a reasoned debate, wouldn’t you?
Neither does the OP provide clear evidence that she is ‘slating the teacher via gossip and supposition’. The most we can take away from her posts is that she spoke to one other parent passing on the message. Again, that is your interpretation of events. Maybe she was ringing up all the parents slating the teacher personally, but maybe she wasn’t. Perhaps she was simply calling other parents to ask if their child was upset, did they have concerns.
To you, the OP comes across as massively intolerant and uniformed. To me, @vegetaria comes across as a parent concerned about an inappropriate text for their 11 year old child.
Unfortunately, teachers, like us all, have human failings, including not necessarily understanding the harmful impact of the content that an adult believes, with all good intentions, to be appropriate for children. Two examples:
This research on the unintended, but nevertheless actual, damage from showing films about CSE in schools which were meant to educate children about consent, but led to greater harm.
This research on the ‘Scared Straight’ programme in the US that was meant to deter offending but actually led to higher re/offending rates in juveniles.