It is less than gibberish to most people because they aren't listening. In any case "there for our safety, first" is a misleading mantra used primarily to excuse customer service lapses. The reality is that F/A's are there (and should be there) for customer service first, as in that is the most significant part of their job with respect to time and customer interaction; safety is first only in terms of a few mandatory check-list items at very limited times of flight and in the rare event of competing priorities.