1st off: 1A applies to CONGRESS, not states, or people, or colleges, or businesses. They can curtail speech if they want. So much of this is moot.
The First Amendment applies to all levels of government in the United States because the First Amendment has been legally incorporated.
See this explanation: https://en.wikipedia.org/wiki/Incorporation_of_the_Bill_of_Rights
So it is NOT ‘moot’.
So a public school singing Christian hymns, with a Virgin Mary icon on a teachers desk or having a pregame prayer is also moot for 1A. Its not Congress.