I would be OK with your post 35. I was also OK in the 70s when we students met and prayed on campus even after the school threatened to call the cops. My right to pray is not limited by the government.
“They are free to go do this in their church(es).”
If freedom of religion only applies to when we are inside a church, we have no freedom of religion at all. Others have no right to be free FROM religion or religious people. Who you invite into your home is your business. What goes on with public property falls under normal standards of freedom of speech and religion - if it is not disruptive, harmful, or detrimental to others, then it should be OK.
Killing chickens would not be acceptable. Marching around praying loudly would not. Prayer calls would not. All are disruptive. But an Atheists Club or Club of Islam or Christian Club or LDS (not LSD!) Club ought to be able to meet and to pray during their meetings. When freedom is extended to all, there is no endorsement of one religion over another.
I think this actually got ruled on by SCOTUS not too long ago. IIRC, prohibiting animal sacrifice with respect to religion is unconstitutional. Hopefully the Santeria prayer club will clean up after itself.