Did they now?

I'm not going to pretend Iran is a good country without serious serious problems. Maybe they killed civilians. But I heard from an Israeli news source that only 2 people had minor injuries from Iran's attack. Did that get updated?

Iran clearly is trying to do the most limited response it can under Article 51.  It cannot just be attacked and not respond, that is military suicide.  Buit it doesn't want a war.  It wants friendly relationship with the USA.  It wants a new nuclear deal and sanctions lifted.  Netanyahu is determined to scuttle anything like that.

Also, if the USA is not responsible for the military actions of Ukraine, then Iran is not responsible for the military actions of Hezbollah.