[strken]

I always understood agile to mean "as a business, have as short an OODA loop as possible, don't waste time making detailed plans until you have detailed information, and update your plans as new information comes in". This is why it gets compared with waterfall development, where massive chunks of work are planned anywhere up to years in advance.

At this point, nearly everyone who writes software is well aware that designs and specs you created 6 months ago might be out of date by the time you need them, so there's not really any need to evangelise for that point of view, and agile becomes a buzzword because everything is already agile.