Wow, I am kind of shocked to read someone who got it right.
The overwhelming majority of people don't understand the point of the Constitution. They parrot the incorrect lessons they were taught in school - that the Constitution is about "granting rights to citizens". As your statement points out, citizens already have the rights to do anything they want (by default) and don't need them given to them by the Constitution. The Constitution is all about placing limitations on government to protect citizens. Just because something isn't iterated in the constitution doesn't mean it is a right a citizen doesn't have -- however, if it isn't listed in the Constitution, it's not a right the *government* has.
Free Speech, for example. People think the First Amendment gives them the right to free speech. Untrue. They already inherently *have* that right. The First Amendment *IS ALL ABOUT PREVENTING THE GOVERNMENT FROM ERODING FREE SPEECH*. It's as clear as day in the language, itself:
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances."
Nowhere, there, does it have anything to do with your right to free speech or mine. The amendment is entirely about telling Congress that they're not allowed to make any laws prohibiting or abridging these rights.
Unfortunately, I'd say 95% of people think it is the other way around.