I remember growing up, I had an acquaintance who was kind of outwardly rude to his parents - never swore at them though - and that was incredibly uncomfortable. I only experienced that once.
When I imagine the made-up teenager in the posted article, it's some spoiled, estranged kid in Beverly Hills with an absent father and an anxious, over-young mother paying for a 24/7 nanny.
Which is to say, a completely alien experience. I do feel that some other cultures may be too deferential towards their parents' wishes, meaning I probably fall on the Beverly Hills side of the spectrum, as far as people from those cultures are concerned. Still. That's beyond belief. I would have been abused for that.
Definitely a minority
My son would never go that far - he dislikes "bad words" to the extent that it frustrates us because he'll tell us off for relatively innocent things, and insist on at most spelling out words he consider bad....
But he'll still on occasion try to say something he knows is hurtful when he is angry and want to get a reaction.
So if it sound crazy that someone would call their parents "bitch", it generally just reflects what they've gotten away with before and gotten the right reaction from.
To be clear, I'm not suggesting that laying hands on them would fix things. But there's usually a lack of someone being there who can send them to their room or give them any kind of punishment for their poor decisions/actions.
Maybe it's because I grew up as a kid in another culture (Eastern Europe) and some time ago (I'm 36 now) but do kids nowadays really call their parents "bitch"? My parents almost never laid their hands on me (the couple of times they actually did I had deserved it) but, nevertheless, it would have been out-of-this-world for me or for any other kid to call their parents names like these. It reminds me of this Eddie Murphy sketch: https://www.youtube.com/watch?v=ldUbxfOtjqw .