This is very different from what the First Amendment to the US Constitution:
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof, . . . ."
While the Universal Declaration of Human Rights establishes a right to "freedom of . . . religion," the US Constitution prohibits government from mandating or prohibiting religion.
Your article interprets the Universal Declaration to be the same as the First Amendment (at least on paper) - a negative prohibition on interference, rather than a positive grant of a right.
I agree with this. Unfortunately, the US Supreme Court has interpreted the First Amendment as a way to impose the religion of some onto others.
https://qcp.medium.com/no-you-dont-have-the-freedom-to-impose-your-religion-on-me-934b76f3907b