Goosefoot: if adults, in private, enjoy 'unconventional' sexual activities, what the fuck has it got to do with you or anyone else? Might as well claim it would be better to 'minimize the chances' of people developing a keen interest in train spotting, or astrology, or cycling.
Yes I know this thread is about concerns regarding how much adult sexual behaviour should be visible anywhere near children, but some posters seem to be more fixated on types of adult sexual behaviour being inherently bad or wrong just because it's stuff they don't fancy doing themselves. And there are attitudes extremely reminiscent of the way people used to talk about same-sex couples/relationships: gay people were thought to be naturally more dangerous to children; it was dangerous for children to be exposed to the idea that some people prefer sexual/romantic partners of the same sex because it might 'give them ideas', etc.
There are undoubtedly dangerous individuals around the fetish scenes(whether straight or gay). Just like there are dangerous individuals in religious groups, social clubs, political parties, charities, hobby groups - and even those working with vulnerable young people (just because you've passed a DBS check doesn't guarantee you're not a predator: all it states is that youve not been caught.) Many respectable pillar-of-the-community types, including those who make a lot of noise about how disgusting unconventional sexualities are, can turn out to be hiding their extremely dangerous true selves.
What children and young people need most of all is PHSE that focusses on consent, courtesy and autonomy, and a culture that shows them they will be listened to when they say that someone is behaving inappropriately around them. Not wave after wave of disjointed moral panics around some group of 'outsiders'.