100% - although it is stunning to see since most LLMs get CORS questions right (which is surprising since they trained on all sorts of incorrect data).
Maybe it’s like that trick where if a thousand people guess the amount of beans in a jar almost all of them will be wrong but their average will be very close to, if not, correct.
Possibly, but at a semantic level.
they probably weight documentation higher
They're applying trust factors similar to PageRank.
I think many (most?) have preferred sources. I would weight Wikipedia and MDN higher than Snurk Grubble's blog in training, no matter what the topic.
Also, you can count on most developers to reach the documentation only as a last resort, and try every random blog first.
It's probably trained more on fixes on incorrect CORS than the problems