We know that for a fact?
Yes, Harry intuits it, DR itself doesn't argue with it, GK an Vadderrung agree with it's dark nature. The ley lines aren't the island/prison. Harry uses power from that everytime he's on DR via subsidizing it, He's directly linked to that, not the ley lines power.
I honestly don't know what you're talking about.
Exactly, and neither of us saw what the OP saw. But both things are there and unnoticed by Harry himself.
Considering by the time he was talking to Harry, Harry had already taken DR, and the subject they were talking about had nothing to do with DR, why on Earth would he say anything about DR?
The whole key of CD's plot was the island dude
He didn't exactly offer up extra info, and he was paid there...
By contrast, he was freely giving Harry information about Chichen Itza, the kinds of things he was likely to find and have to combat at Chichen Itza, and he himself was going to be at Chichen Itza.
Kiiiiiiiiiinda seems like that'd be the time to mention a Dragon at Chichen Itza.
Because the sleeping dragon who source a ley line is important because? Did it come into play directly? Did it effect victory?
Here's an idea Kulkan supposedly fed upon/replaced the original right? Maybe he sacrificed Quetzalcoatl on his source of power to create Chicken Pizza in the first placed, meaning the energy literally came from a Dragon that's now not a Dragon, but still has the memetic value of a dragon?
It's his power. Why would a creature who leaves a death curse on its hoard such that nobody will even dare touch it be blase about someone literally leeching his power directly from the source?
See above, also, it's his aura, Aura's bleed off and spread out, get channeled into the magic flows of the world... Why is the dragon suddenly finding reasons to awaken when he's probably been there from before they arrived?
"Nobody can have my baubles, not even over my dead body! I curse it with my last breath forever!"
"Eeeh, sure, go ahead, random wizard, just drain my energy to attack my own territory, NBD."
Do those sentences really sound like they'd come from the same type of creature?
DR is largely irrelevant. How on earth would using power from something not link you to its source? Considering Harry keeps being told not to use the power at DR for exactly that reason?
These questions are illrevent, and it's cause the power would change him, and effectively be a boatload of tainted magic. Why do you think Merlin collected those things?
Harry describes a power that almost has a kind of awareness because it's old. That doesn't mean Dragon. If anything, a Dragon's power would be more volatile and obvious that it has an actual will.
See above... also, you can't unmake what's there by supplying an opinion. DR again, has no volatile will to it's ley lines, which isn't
illrelevent, as it's a direct parallel with nothing which you describe.