"Obsessed" is both a generalization and rubbish.

As an example, in the US some carriers include the requirement in their safety & security policies. Once filed with FAA, the failure to abide by them is actionable against both the carrier and the individual. Put simply, a FA doing his job is not "obsessed".

This is sometimes confused with the request that on very hot days that passengers pull the shades down on arrival and leave them down until the push as a means of keeping the aircraft interior a bit cooler. There is, of course, no safety issue at the gate.