You asked when Hezbollah will attack Israel. I said they already are.
If this were true it would adopt a far more aggressive stance against it than it has so far. Both Hezbollah and Israel have some form of deterrence against escalation, neither side wants war.
How does this answer why you expect Iran to attack?
"Amir-Abdollahian also said that Iran was not responsible for Hamas’ attacks on Israel or any strikes in the region either against Israel or American forces in the area, including by Hezbollah, its close ally, in Lebanon." This is accurate.
Hamas is supported by Iran but is obviously less ideologically aligned and integral to the Axis of Resistance than other members. Hamas and Iran famously had a public dispute when Hamas took an anti-Syrian Government stance in 2012-2014.
I would prefer not to speak of Palestinian groups as "expendable" or not. Their objectives are sometimes aligned with those of Iran and they are heavily armed and funded by Iran as a result, but they act with complete autonomy.
A US CSG 700-1000km+ from Iran's borders is very far from "easy" to "take out", as you know. Regardless, you suggested the US did something that crossed "The supposed red line of Hezbollah and Iran" - what is that?
I don't see anyone claiming that. The US war machine is a behemoth and the Islamic Republic of Iran acts accordingly (and rationally), with a clear and strong aversion to (directly) fighting a war with the USA.