Of course there is reason. An ego will recoil at hearing it is not ultimately OK or good by way of reflex rather than consideration.
The point you seem unable to grasp is that you can't be told you're not OK (or that you are, for that matter) by something fictitious.
The heated response the very suggestion receives testifies to that.
... and hot is cold, and black is white. Stay away from zebra crossings, Vladdychops.
People may bang on here about the equality of religions
Do they?
but the level of tolerance depends on how judgmental of the ego they are felt to be.
I'd have thought it depends how dickish they are. Christianity - dickish level: high, historically. Jainism - dickish level: low.