Someone completely alone does not need rights. Rights are a description of the relationship between individuals and government. Take away one of those and the idea of rights is unnecessary.
So the argument fails.
Do you realize that you guys are actually making the circular argument? Sure, if you define 'right' as "a description of the relationship between individuals and government", it will have no meaning without the presence of a government. But that's not how Jefferson defined it.
So tell us how Jefferson defined it. Recall the Declaration says that governments exist to secure these rights.