ywnmoderator is either merely coincidentally evocative of Yeshiva World News or a strange name for someone who's particularly interested in questions about Judaism interacting with Zoroastrianism. Another coincidence is this other recent question about that interaction.
I thought we had a general question about whether Jews are allowed to practice another religion alongside Judaism (like some claim to do with Buddhism, for instance). I can't find it. If we had it I could close the current flurry of "are Jews allowed to do thing X from another religion?" questions as a dupe of it. If we don't have it, does anybody want to ask and answer it? (It would look wrong for me to both do so and declare the dupes.)