Without a landing, births on those flights are legally outside the U.S.. "Jus soli" ("right of soil") means what it means. Space craft and their passengers outside the earth's atmosphere fail even more to meet "jus soli."
For the purpose of the thought experiment, technicalities are irrelevant. The entire point of this mental exercise is to demonstrate how silly it is to regard birth above our soil as a conveyance of citizenship. Anchor babies ought to be as clear of a case of this as anything else, but somehow people don't seem to be able to see the absurdity in something unless the absurdity is raised to ridiculous levels.
(Argumentum ad absurdum.)
To you, the real world distinctions between ground (soil) air (airspace) and outer-space are "technicalities."
To you, answers to your question with the concepts of law and national military airspace used in the real world are "irrelevant." So, you ignore the fact offered that foreign aircraft and their passengers flying through US airspace, w/o landing, are considered to have entered US controlled airspace for military purposes BUT are NOT considered to have entered the US for legal purposes.
Your preference for seeking answers in the rabbit hole "absurdity" of your "silly" and endless "mental experiments" rather than in facts and reality, together with your equating the nonsense you've posted on this thread with the genius of Einstein, makes a mere mortal like me wonder how in hell you're not a dellusional liberal.