I believe you are absolutely right — it seems to me like 2008 was specifically designed to undermine the NBC requirement.
The 2012 election was, possibly, put in place to solidify the precedent — IIUC, George Romney (Mitt's dad) wasn't actually a US citizen.* (See Wikipedia, born in Mexico, no mention of naturalization.)
I think, one of the reasons that Cruz was pushed so hard in the primaries was to set up that multiple-people precedent for ignoring the NBC; that way whoever won in Hillary v. Cruz the globalists would have their agenda advanced. (Before Cruz's "ascendency" the "anointed one" was Jeb, fortunately Trump knocked him out of the race quickly.)
* Note that this would have set up precedent for anchor babies to be eligible for the Presidency.
PS - The reason that precedent is so important to these types is because they've infiltrated the Judiciary to such a point that 'precedent' is held superior to the actual Constitution; so, if they control precedents (by their reasoning) they control what is and isn't legitimate.
Every anchor baby is eligible if Jindal, Haley and Rubio are.
Winston Churchill would have been eligible if Ted Cruz is, his mother was an American.
Precedent allows the Constitution to be amended by one person. Not unlike stroke of the pen law of the land, cool huh?