I've vaguely followed this rather esoteric debate with mild (or is that too strong a word) interest although some of the posts have been, with apologies to Twain, written by those who don't have time to write something shorter and would themselves fail to register a single Twitter 'tweet' as a result.
Anyway.....criticism of the Facebook message today (by Mr A Tis) is wide of the mark. I have to say that this is highly practical advice, given the season, aimed at ensuring that security queues don't get out of hand. Anyone that travels regularly (which I'm not convinced many commentators here do) would get that - based on what you see at security most days.