What depths?
I assume OP was listening to the BBC National Short Story Award story Comorbidities by Naomi Wood.
The opening sentence was:
For a while Joe had wanted to spice things up in the bedroom. which might have been a warning about what was to come but what did come was very tame.
Joe is an ethnic-Chinese mental health nurse who counsels young people who have suffered social media abuse.
The story is about a young couple exhausted by having two young children, worrying about climate change and their children’s future. There’s a discussion of social media abuse, over-consumption of meat, cultural differences, over-population, racism, the emptiness of dating apps.
They give the children to his parents to look after so they can have some time alone together but are so exhausted that they sleep for most of it before sex. That part of the story takes up about a minute out of 27 minutes. They do video what they do to “spice things up” but later delete it for fear of it being hacked and ending up online especially in view of the work Joe does. There’s a mention of a BJ, not even the words, just BJ and the words dick and nipple but more about what happens to nursing breasts than anything else and how women's bodies are changed by pregnancy but not men's.
Then the couple go to his parents, the six of them go out for Chinese food and then to the park. It’s a story about family life.
A 15 year old boy knows what a BJ is, knows what dicks and nipples are because he has both. He will know that people video themselves having sex and how damaging it can be when these videos are used to exploit others.
Overreaction from OP who could have listened calmly to the story and maybe discussed some of the issues with her grandson instead of of this rant.