Yes, I'm not sure what your point is. Can you expand?
The only reason to think the dinosaur's extinction event wasn't nuclear war is a lack of fossilized technological artifacts
What you then provided as a counterexample of other reasons to reject this theory fits within the scope of things that are missing.
Discuss things here if they don't deserve a post in Main or Discussion.
If a topic is worthy and receives much discussion, make a new thread for it.