Christianity is not dead in law or policy. In the U.S. it's actively shaping abortion bans, trans healthcare restrictions, school curriculums, public funding, and "religious freedom" laws that conveniently only protect one religion. TST exists to say: if the state gives special treatment to religion, then all religions get that treatment. No exceptions.
As for "why not protest religions that want totalitarian societies," TST does. Constantly. Authoritarian religion isn't limited to one tradition, but in the U.S. the dominant threat is Christian nationalism. You don't punch abstract global villains when the boot on your neck is local and writing laws. You fight what has institutional power where you live.
And the "you don't need Satanism to be rebellious" point is technically true and practically irrelevant. You don't need a labor union to dislike exploitation either, but collective identity is how rights get defended in court. TST isn't a vibe. It's a legal structure. The label exists because labels are how the system recognizes standing, protections, and equal treatment.
Satan, in this context, isn't a being. It's a symbol of defiance against arbitrary authority, bodily autonomy, and individual conscience. Using that symbol is intentional. It forces hypocrisy into the open. When lawmakers say "religious freedom" and then panic the moment it applies to anyone else, the mask slips....