That is the most dis-ingenuous argument I have ever heard on this subject and I go back to ‘08 on this. No where in the 14th does it state who is NOT a Citizen. Last time I looked, law is positive.
Many people like putting their heads in the sand because the truth doesn't give them what they want - e.g. AfterBirthers.
To say that someone born on US soil of two US Citizen parents is a Citizen does not, in any way, exclude someone who was born overseas of two parents who are citizens, for example.
Likewise, to say someone born on US Soil to two citizen parents is a citizen does not, in any way, say that someone born on US soil to two non-citizen parents is NOT a Natural Born Citizen, in any way shape or form.
I suggest geometry. Draw some circles. Learn grouping and subsets.
Your brain can not handle the subjects, when we try to teach you verbally or in writing.