I would not wager money on a revolution coming from this war, either. But if a revolution does come as a result of the war, it seems at least as likely to be in the United States as in Iran.
Trump could literally go on TV and r*e a kid on stage in 4k, and most people would go to work and be like "damn what weird times are we living in"
If shit gets bad enough economically to where there are food shortages and such, you will see US split before any revolution happens.