Some regulations ARE burdensome and cause problems, possibly more harm than benefit. And perhaps this is silly and unnecessary. But now that it's already been

Some regulations ARE burdensome and cause problems, possibly more harm than benefit. And perhaps this is silly and unnecessary. But now that it's already been implemented by every airline, I completely fail to see any value whatsoever in REMOVING it; if anything, that is an equally burdensome 'regulation'. (of course they don't HAVE to remove the notices, but if they don't, suddenly they're at an apparent price disadvantage compared to the competition that does).