Warning fatigue is a real concern, and requiring people to watch videos on the internet should not be a prerequisite for adequate safety.
I've definitely noticed a proliferation of warning notices and signs in the US (and I don't just mean the Californian chemical hazard warnings in the most bizarre/unavoidable locations like a jet bridge), with the really important ones usually reiterated by a human standing next to them, continuously shouting the same instruction, apparently because people don't seem to take them seriously otherwise.
It’s always been an American impulse to resist authority and think for yourself. That is generally admirable. Then at some point the “think for yourself” part got tossed out, and people disobey instructions for the sake of it.
It’s not that hard to follow instructions. There aren’t that many, and almost all flights have the exact same ones. If you don’t want to learn about getting tossed around like a rag doll at 40k feet that’s fine, just do what the crew tells you to do and you’ll be ok.
I've definitely noticed a proliferation of warning notices and signs in the US (and I don't just mean the Californian chemical hazard warnings in the most bizarre/unavoidable locations like a jet bridge), with the really important ones usually reiterated by a human standing next to them, continuously shouting the same instruction, apparently because people don't seem to take them seriously otherwise.