@ArabellaScott nodding along with yr post. I think the individual consolidation that activities like this are just 'harmless fun' exists because of a more general shift in boundaries. Societal grooming as you say.
Thing is, over the years many of us would have supported this drive. Availability of the pill, sexual liberation, gay liberation, gay marriage... all drove/ necessitated a change in attitude for greater good. For Gen Xers like myself, figures pushing back against this, Mary Whitehouse and such, were seen as ridiculous and woefully out of touch.
So we get a v convincing narrative of progress, validated by changes we have witnessed across our lives. Add to that the shift towards short term thinking, instant gratification mindset that has exploded in the same period (particularly last 15 years or so with smartphones/ social media but in a general state of existential uncertainty, climate change, lack of job security etc). It creates a paradox where we delegate long term thinking to the narrative of progress as we are consumed in a feedback loop of instant gratification. Basically we have got quite lazy with critical thinking. And groomed into this state.
Concepts of safeguarding are more difficult to grasp because of this short term thinking. And anti-collectivism. We're not joining up thinking on a macro level. Even on an individual level we are somewhat blindsided. Safeguarding a baby is understood as "they are happy in the here and now. They are not crying. Their needs are met. They are asleep and unaware. They won't remember" For that individual baby that is most likely true. It was a nice, fun afternoon.
So yeah, I agree with you that ultimately the bigger picture stuff is more worrying.