I was just looking at my 16yo son sprawled out on the living room sofa in T shirt and boxers, happily showing his 18yo brother some Youtube clip on his phone at full volume - pretty normal scene - and it struck me how different his life is from mine at the same age, in terms of parental expectations and behaviour etc
If my mother/stepfather had seen us like that, it would have been "sit up, don't loll on the furniture", "turn that racket off" "you've got a bedroom to relax in" etc - we weren't comfortable in the way my dc are in their own home. We didn't really "chill" in our parents' company or spend the evening just sitting in the same room chatting by choice. We certainly didn't play music or make a "racket" outside our own bedrooms. If I asked mine to take it elsewhere because I was working or wanted to make a phone call or whatever, they would, but there isn't the presumption that they can't impose their presence on the communal space, iyswim. If my dc want to open or close a window, or put the fire on, they do so. Ditto getting a drink or a snack. I think they have more confidence than I and my siblings did as a result, though they are pleasant and respectful (most of the time)
Admittedly, I didn't have the greatest childhood, which colours things....but I do think there's been a more general shift away from formality and authority-for -the-sake-of-it in parent-child relationships. What do you think?