What constitutional rights they have is a totally separate question from the question of standing. Standing merely means that they have asserted a claim that their rights were violated. Whether they have rights, and what rights they have, are questions a court cannot even decide unless it first decides that the plaintiff has standing.
As for the nature of the harm done to each citizen if the constitutional requirements are not upheld, enjoy your foolish dancing on the head of a pin. The harm is real and concrete and suffered by each and every citizen if a usurper takes the presidency.
I am not telling you what the law should be, or what I would like the law to be. I am telling you, speaking as a lawyer, what the law is. And the law has been settled for generations that if the identical harm was suffered by everyone in the country, no one has standing. There is a very good explanation (not by me) posted here.
As a lawyer, are you troubled by the sealed records, the e-mailing of a purported birth document while refusing to submit it to the authorities, as McCain did immediately, etc.? The American people should have standing in this matter. It is OUR CONSTITUTION AND OUR COUNTRY.