Religion is part of identity. You can’t make fun of someone’s religion without also making fun of them for being stupid enough to believe it.

Not to mention that the profoundly religious associate everything they do as acting in accordance with scripture. So by making a mockery of their faith, you are by extension the enemy of all that is good and just, and there’s no difference in intent from their perspective.

That’s why you can never try to reason with people who are religious. If they’re going to interpret it that way anyways, may as well meet them at their level and accept the situation for what it is.