Curious that this article omits the issue, so dear to Americans, of freedom of speech and conscience.
Could requiring pronouns even be unconstitutional?
From Wikipedia:
The first amendment to the US Constitution states "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof." The two parts, known as the "establishment clause" and the "free exercise clause"...Three central concepts were derived from the 1st Amendment which became America's doctrine for church-state separation: no coercion in religious matters, no expectation to support a religion against one's will, and religious liberty encompasses all religions. In sum, citizens are free to embrace or reject a faith, and support for religion - financial or physical - must be voluntary, and all religions are equal in the eyes of the law with no special preference or favoritism.