The primary goal of a wargame is to fight, thus a wargame.
The primary goal of a roleplaying game is to roleplay, thus a roleplaying game.
The primary goal of a storytelling game is to create/tell stories.
The problem I have with what you are saying is that you say primary but then don't point out that there are secondaries of each in the others...
Wargaming is mostly the fighting...but people enjoy the rp and story too, just to a lesser extent
Role-playing is mostly about assuming a role, but people enjoy fighting and stories to a lesser extent
Story telling is mostly to create a story, but people like to in those games assume roles and have fights as well (Ok maybe the ifhgt in this one is really low...like less then 1%...but you get the point...
D&D is billed as the premiere roleplaying game. If that is no longer going to be true, and the brand is changing into a storytelling game then the developers/marketers should just man up and say so.
no one is saying it isn't going to be a role-laying game (except you)...they are saying that an RPG can have infuences of storytelling games (Heck they were birthed from wargames)...
Infact I think RPGs are at there best when they have a good wargame and a good storytelling game feel mixed in. How much of a mix is diffrent per group.
In my tuesday night games I would say we are 40% rp and 40% storytelling and 20% war gameing on avrage...but when we are doing the orcus adventure path (H1-E3) there is a lot of dungon crawl in it...we play more like 50% wargame 40% RPG 10% storytelling
on my saterday night game we are more like 80% wargame 15% storytellign and 5% rp...heck we very rarely talk 'in character'...how ever that same group (Yes every plyaer adn the DM) play LFR once a month...and we are always in character for that...
The developers/Marketers are trying to show people ways to expand there games...that is not a bad thing...D&D is the premiere roleplaying game...it has it's roots in wargaming, and story games...so it is a healthy mix