In other words, if you were a judge and we're presented with a range of offenders wearing tshirts with "two genders", "satan church", "flat earth" and "vaccine hoax" logos, you'd selectively label them as political, religious, unscientific and "dangerous disinformation" and issue sentences accordingly? If that's the case, this isn't different from how the inquisition operated long ago, except that they would praise the flat earth and two genders guys, and execute on the spot the satan worshipper. Freedom of speech is about protecting all viewpoints, including the ones you don't like and even the ones you deem offensive.
> if you were a judge and we're presented with a range of offenders wearing tshirts with "two genders", "satan church", "flat earth" and "vaccine hoax" logos, you'd selectively label them as political, religious, unscientific and "dangerous disinformation" and issue sentences accordingly?
No, I would label them all as "political" except the satan church one. Because the satan church tshirt you mentioned doesn't make any kind of a statement aside from signaling belonging to or support of a religious group.
However, if the satan church tshirt made an additional statement (after "satan church") like "abortions should be legal", I would count it as a political statement as well.
"Flat earth" is just as much of a political statement as "Spherical earth" is (science and validity aside). You can get fired for either without much legal repercussions for the employer. Whether you get fired or not for wearing that tshirt is fully up to how your boss feels about it.
To put it simply, "protected class/speech" doesn't mean that you can wrap any statement inside of it and you are protected from getting fired. Especially if that statement you wrapped inside goes directly against another protected class (e.g., if you had a christian church tshirt that said "islam is a fake religion"), then I bet you are gonna get fired extremely fast, and saying "religion is a protected class" won't help you much there.