After reading it, I'm not convinced, because the "OMG here's a list in a book that nobody has ever quoted before" just ended a 6 year argument just doesn't hold enough water for me. Also, in terms of expandibility (homebrew i suppose) a mechanical definition is better than a list.
The fact that you dismiss rules on account of a bunch of idiots recycle a stupid idea is the reason is still persists. That's right, just like you there are a thousand other people saying I can't argue or prove anything but an unspecified group of unnamed people do so f*ck rules and book count. ~THERE WAS NO HOLOCAUST!!1!!!1!!1
DWK Kobold arguments have
always operated on the concept that the rest of the book is wrong and DWK is an exception.
Entry on TD interacting with Kobolds? Doesn't mean DWKers.
Draconic Heritage / Half-Dragon list? Doesn't mean DWKers.
Page 4 stating the kobold
RACE isn't a True Dragon? Doesn't mean DWKers.
Direct linage (that is one parent is a TD) makes you a Half-Dragon which doesn't make anything a TD? It's ok, mygreat great great great grandpa was a Red Dragon so I'm a TD.
The core element of it's argument goes something like
Wizard's need 19 Intelligence to cast 9th level spells, but I say Elven Wizards are an exception and are clearly not named in the rule passage therefor whilst Feebleminded I can cast Gate. No DM in his right mind would humor you and you would be a moron to think otherwise.
Even the pretense, you can qualify for a race or racial subset, isn't even in the rules. A Balor is a Demon because it says so, a Lung Dragon is a True Dragon because it says so, a Kobold is a Kobold because it says so. Having the outsider type and DR don't make you a Devil, having the Dragon type doesn't make you a True Dragon. Just like having the Spell Cure Minor Wounds and Turn Undead doesn't turn a Paladin into a Cleric or some other bullshit like that.
Hell, look at the awesome power of a TD that I've brought up multiple times. A real TD is obtains HD from getting older. Like on it's birthday it gains two HD, maybe some new SLAs, maybe obtaining DR/SR for the first time, maybe even obtaining Frightful Presence. No other monster type truly does or advances like this. Like take a Greater Elemental, per RAW they can only advance to 23 HD and
that's it. The Elder Air Elemental has 24HD but that's another monster entry, but even if the conclusion they are one and the same the term "Elder" doesn't apply to age. It could be five minutes old or fifty years old, no speculation is made and it just lacks that real connection that TDs have. This is what the Draconomicon meant by "more abilities" if the basics of English grammar escape you. And as the Errata would back up, the Draconomicon holds priority on TD (thus what is or isn't if qualification did exist), not the MM1, not Dragon Magic, not even the DMG and PHB.
When you hear something and wonder if it's fact. Count the number of loops holes used, the illogical leaps, the personal intent trumps the book's and so on. You can judge how stupid a person is by the larger the number gets and how much material it has to argue against and ignore to work.