Earlier quoted context omitted.
This is real life not cartoon villany. The US administration is not a kind one, but their goals are not just 'death for people in Iran'.
Why else would they start an unprovoked war while pretending to negotiate peace with Iran? They want death of Iranians.
Your mistake is thinking they care about Iranians enough to want them dead. The reality is that they want Iran to bend the knee, at which point they'll go back to not thinking about them at all.