I suspect "concentrate" simply has a legal definition that excludes flavour packs - in fact, doesn't the article say as much? The tricky thing about labeling is

I suspect "concentrate" simply has a legal definition that excludes flavour packs - in fact, doesn't the article say as much? The tricky thing about labeling is that there's obviously a line and the level of detail required will vary according to the beholder. I suspect there are far worse offenders in the food industry and, as the article implies, drinking fruit juice anyway isn't automatically a 'healthy' option; the concentrate/non-/flavour-pack distinction is probably relatively insignificant.