I thought the same as you, OP. How does such a book of hate avoid being criminal? Because 'hate crime' is a thing in the UK, isn't it?
So I googled 'hate crime' just to be sure.
"protected characteristics:
race
religion
sexual orientation
disability
transgender identity."
But not sex. So it's ok to hate women, or a woman? Even if the hate and hostility is absolutely clear?
"The Law Commission has recommended that “sex or gender” should not be added to the protected characteristics for aggravated offences and enhanced sentencing as it would be ineffective at protecting women and girls and in some cases, counterproductive."
" the Commission has made a number of recommendations to provide greater protection:
Extending the offence of stirring up hatred to cover stirring up hatred on the grounds of sex or gender. This would help to tackle the growing threat of extremist misogynist “incel” ideology"
And TRA extremism, presumably.
Receipt: www.lawcom.gov.uk/project/hate-crime/
It doesn't look as if we have a legal leg to stand on, at the moment. Women being so absolutely disregarded by UK law.