Seyed Abbas Araghchi is an appointed spokesperson of the government of Iran. It's kind of cringe that he said "vote". I don't think he's trying to absolve US of blame. I think he's trying to stoke an anti-war movement among people of the US.

He's not saying that Israel is the only party to be blamed. He's pointing out that Israel attacked Iran first because Israel wants to control the whole West Asia region just as much as the US does.