I'm not ignoring what's said in the primary source (as True dragons advance in HD, they become more powerful).
It says any dragon that gets more powerful as it ages is a True Dragon. Done. That's it. If you do that, you're a True Dragon. That's ALL Draconomicon says on being a True Dragon. And, as TML has now shown, D&D specifically references higher stats as more powerful, so there you go. That's what the primary source says... the opposite of what you're claiming.
What you're stuck on is that by your interpretation, Dragonwrought Kobolds are
also lesser dragons. This is not possible, as Draconomicon defines Lesser Dragons as being other than (and thus exclusively not) True dragons.
Specificity gets the 12 age categories in (maybe), but doesn't get merely having them to qualify (advancing in HD through age is more specific than simply progressing in age),
Except you made up that "advancing in HD through age" definition. That's not how D&D always uses the term. In fact, I would state that that's NEVER how D&D uses the term. When they mean that, they say "Advancement: By Age. "Advances" always means "passes through" or "travels through" or a similar meaning.
you assume that advances means what you want it to mean despite every True Dragon advancement entry ever written.
No, every True Dragon table says "Advancement: By Age" which is NOT what the Draconomicon says. And what I want is to clarify RAW. It doesn't matter to me which it is, as long as the correct interpretation is used.
My argument is that YOU are using "advances" incorrectly. Merely stating it is so reminds me of this:
I'm pretty sure Argumentum Ad Windmillum is a fallacy. And while you can claim it, you're still creating a contradiction in the primary source by that claim.
Additionally, if Dragon Magic or DoK (secondary sources) were meant to update the primary source (the Draconomicon) it would be explicitly stated as such. That is also RAW.
No, like your "strict definition" you just made that up. The DMG gives prestige classes. Other books add PrCs. Few or none say "this explicitly adds to the number of PrCs available." Unless you'd like to quote the rule that says "updates of primary sources must explicitly state that they are updates." Go for it.
You're also missing the fact that Dragons of Kyrnn and Dragon Magic both don't contradict Draconomicon. As such, primary sources aren't even relevant. Primary source ONLY applies to contradictions. True Dragons needing 12 age categories is not a contradiction of True Dragons gaining power as they get older.
RAW already allows for certain rules texts to be thrown out entirely when they do not agree with the primary source. Your antithesis to the concept that certain rules statements may just be flat out WRONG is hilarious.
This is only true when A) the secondary source directly contradicts the primary source and B) the secondary source is not more specific. Since Draconomicon only says that True Dragons are those that get more powerful as they get older, neither of the two other sources are contradictory. Thus, they CANNOT BE THROWN OUT. You may find it funny, but he who laughs last thinks slowest.
Remember, the definition you're using for True Dragons is actually just inverting the definition of Lesser Dragons. You're claiming that DW Kobolds are both Lesser and True with your logic at this time.
Also, appeal to consistency IS a fallacy. Try googling a little harder. Or a philosophy class.
It's "Appeal to Inconsistency." You've got it backwards. Appeal to consistency is a valid logical tactic... ESPECIALLY when discussing rule systems.
JaronK