I think it reflects the lives of the media folk who make these programmes. DD worked in the media, technical side, until a just over a year ago. She was quite scathing, and she can be very scathing, about the creatives in her industry.
She said that they lived a life completely out of touch with other people. Nobody she worked with or came across would admit to anything other than left wing politics, nor would anyone dare admit having religious beliefs. A disproportionate number at all ages and levels were single and divorce and marriage was generally seen as the fools option.
It is not really surprising that we get the programmes we do.
DD now works for an engineering research centre. She finds it wonderfully normal with diversity at every level from the nationality etc of her colleagues to their normal range of political opinions, religious beliefs (or none) and marital arrangements.