And it's going to get worse.
From very recent trading, the new ofsted framework wants subject leaders in primary schools to be completely in charge of their subject, making sure Cpd is effective and the curriculum progresses step by step building on previous knowledge. Curriculum design is to reflect school cohorts. Ofsted are also taking easing very seriously and so stories and books and literacy skills are going to be even more a major factor in all subjects.
Organisations such as charities, museums etc are falling over themselves to make them selves relevant to secure funding. (In all subjects but pshe is a hot potato.)
Basically one woke pshe teacher in an area where they deem it necessary and there is little limit to what might come in. If they want to buy a load of books with a particular theme, they will.