There seems to be heavy criticism of SLF not being obediant. There are plenty of examples just this year that leave alot to be desired by the crew.#
Like climbing to 41,000FT & 40 minutes after take off on a German major airline, a flat calm flight on a beautiful day, the seat belts signs still on. Only after 3 requests to the CC did they query the flight deck, who imediately clicked it off. Or the UK charter airline in light to moderate turbulence, with pax all belted up, the cabin crew decide to stand on seat arm rests & lift up & down their very heavy wheelie bags from the overheads - unbelievable.
Or the big airways 734 that didn't even have a safety card in the seat pocket. I could go on, but in my experience the bulk of SLF are more sensible than you give them credit for.