You can't tell me with a straight face that even 30 years ago air defenses would advance to such a level that a strike package involving over 250+ munitions with close to half of it ballistic missiles timed to impact at around the same time would be almost completely defeated. Patriot during the gulf war had abysmal intercept rates against tactical ballistic missiles.
Defense is always going to be more expensive than offense, the other option is to let all of those munitions land in Israel.
The point is that this attack wasn’t really designed to do real damage, but to send a message. The Israelis had ample advanced warning of the incoming attack. The Ballistic missiles were split into two waves and many targets across the country, military targets at that, which should be the most well protected in Israel. The fact any got through is a failure for Israel, because it proves that Iran can punch through its much vaunted defences despite not trying particularly hard, and Iran would have gathered invaluable intel on how Israel and America assets perform against the full spectrum of threat types and are feverishly looking for holes and weaknesses to exploit. And all that’s only at the most insignificant tactical level.
On the strategic level this was a colossal failure for Israel because it gift wrapped the prefect pretext for Iran to attack Israel directly without inflicting the wrath of the world. If anything, most of the world is secretly grateful that Iran pulled its punches and are putting every ounce of diplomatic pressure they can on Israel to just take the L and call it quits. Iran has managed to establish a new equilibrium where it gets to hit Israel back directly where they live for Israeli attacks on Iranian interests abroad. That’s frankly unimaginable even 6 months ago and is basically a done deal that Israel cannot roll back. The only way it can un-ring that bell is if it hits Iran with everything it’s got and in doing so start a massive regional near-peer war.
If Israel hits back at Iran and a whole new war breaks out, everyone who isn’t a die hard Zionist will finger Israel as the side responsible. That means not only will there be no sanctions on Iran, the likes of Russia and China will actively supply Iran with material and weapons for its ‘legitimate self defence’ citing the Ukraine precedent should anyone raise and questions. China for one would be wishing on every star it can see that Israel and America are so stupid, as it would allow them to bleed America of its high-end weapons inventory and potentially even materially weaken the USN should America jump directly into the shooting war.
The EU would be history as they already kissed goodbye to their primary source of oil and gas from Russia. Their already on life support industrial base will basically be wiped out by this.
This is why America, if it’s got any marbles left, will need to rein Israel in at all costs. But this is an election year, with a vegetable puppet at the helm, so all bets are off.