I consider your "history" question on topic because it is from the "past to the present." That is, you talked about weather kites historically and then ask why they were superseded by present instruments when weather kites still have certain advantages.
Regarding the other part of the question "a more accurate header line, and improved wording" are more concerns for a DOWN vote than close vote. (The downvotes can be easily retracted if a change is made).
"Disciplinary" actions (downvotes and close votes) should act primarily as an incentive for people to improve. The idea of "let's kick off the content we don't like" (which is what close votes tend to do), should be considered a last resort, for things that can't be fixed.
In BHF's shoes, I would have down voted, accepted your changes, and removed the downvote.