You stated “WKA was a correct decision”.
Do you believe the children of aliens or an alien should be a citizen if born in the US?
Yes or No.
I don't accept your framing of the question.
Under our Constitution, SCOTUS gets to make that call, whether I like it or not (belief has nothing to do with settled SCOTUS rulings, IMO) and they made that call in WKA...deciding that WKA’s parents WERE subject to the jurisdiction of the US by being domiciled here at the time of WKA’s birth and therefore WKA was a 14A citizen at birth.
I do not BELIEVE this applies to Obama...meaning that I believe that if the facts of Obama’s alleged birth came before SCOTUS, Obama would NOT be a 14A citizen because his father was a non-immigrant foreign exchange student.
I reserve the caveat that I BELIEVE that SCOTUS would grant Obama a mulligan and allow him to be NBC at birth if Obama argued that his mother was single at his birth and only had unitary US citizenship due to the bigamy of his father.