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Misses the point here.
This really isn't about evidence.  Or about Us vs. Them.  Or about elitism.  This is about being considerate.
Something that as a father I spend a good deal of my time teaching my children is about what is socially acceptable, about what etiquette is and how it should be followed, and the different situations it applies in or how it changes due to varied situations.
However an even BIGGER portion of my time is spent trying to teach my kids what to do when they have BROKEN one of those socially accepted rules, and to accept and recognize when the have broken decorum.
Regardless of evidence or a particular statistical comment or how equivocal something is.  We should all strive first of all to be polite, kind, and considerate.  And when we fail (which we ALL are wont to do), we need to recognize this and apologize, or make up for our failings.
By making this a discussion about evidence, we miss the target by 15 degrees, and do a disservice in the process.  This isn't about statistical correctness this is about being rude.