I firmly believe that today's litigious society is part to blame. people will always expect somebody else to shoulder responsibility. Many commonly assume 'all will be OK' because so and so is paid to make sure it's OK. If everything turns out not to be OK then the same questions are always asked. If the person was deemed negligent in not making themselves aware or certain information then someone will be guilty of allowing them such.
Bafta's post sums it up. Posting on behalf of SLF and being primarily concerned with how some passengers are described by frustrated crew members. Some people think that just because they are using what is a service industry then it's a license to throw common sense out of the window and still be afforded the yes sir no sirs etc etc.