According to Dan McClellan, the cross in the cross-of-gold format is really a very recent pop-Christian symbol (that is, used by people other than Catholic monastics).

So the folk who want a gold T to celebrate their trans-ness might have a strong authority to repurpose it…

well, until it becomes the swastika of the white Christian nationalist movement and designated as a hate symbol.

I’m surprised that squishier more red-letter based Christian faiths don’t re-adopt the intersecting-circles fish, which is a much older Christian symbol than the cross.