Actually people don't mind being told what to do, provided what they are being told actually makes sense.
I follow the rules but that's just me. I flew squeezy last weekend to Bristol and from Gatwick and the cabin crew, doing their job, instructed that all electronic devices be turned off and stowed. But no comment was made as people sat there and read their newspapers and books during the safety demo. On the flight from Geneva, while the french language tape safety demo was playing (softly) the cabin crew was walking through the cabin talking to passengers. They were not demonstrating things that the tape was telling them the cabin crew were demonstrating. At least on the flight from Gatwick (HB registered) we got a professional demonstration in two languages, with an offer to provide instructions in German or Italian (in those languages) if anyone wished.
As I mentioned, I powered down my iPad when instructed to. Did I need to? I don't think so, but I did.