Unconditional surrender

I don't know, it doesn't seem like hyperbole to me, actually quite the opposite. Assuming a conservative rate of 100 missiles per month, that would be 1200 a year. Just 20 years would be 24,000. And unless they can expire, they'd likely be storing them safely underground. Keep in mind that we also don't know if they have underground missile factories and how much they can produce and what they can produce, though I strongly doubt they don't have at least 5 underground factories spread throughout the country. Moreover, this number is likely for just their basic missiles.
Iran has known for many decades that Shitrael wants to destroy it. It would be strategically unwise to not prepare for that and even more unwise to not over-prepare, especially when factoring in the west powers that give their rabid project unlimited support and the fact that they may directly attack Iran too, as we've seen so far. Additionally, they would have factored in how many missiles and/or drones it takes to pierce air defenses and actually land a successful hit. Something like 5-10% success rate would not be unreasonable, even 1% wouldn't. However, that's assuming air defenses cannot be disabled. But as we've seen, they've successfully eliminated a lot of them, hence the smaller waves in the past few days and thus the conservation of more missiles.
There are all kinds of scenarios that could play out. Having a massive arsenal of missiles greatly increases the number of possible strategies.
Also, as Iran does not have nukes, that leaves them without an equivalent Samson option. Though, in Iran's case it would likely be to ensure their enemies are also eliminated should they face the possibility of defeat. This in contrast to the real terrorists, who want to indiscriminately destroy the entire world should their power be threatened, including all living things on this planet.
It is much better to vastly overestimate your enemy rather than underestimate them. The former is sagacity while the latter is hubris.

Iran has the right to defend itself.
Where is everyone getting these recent videos from? Is there a site?

Iran wants to nuke Shitrael
Every accusation is a confession.
There is still a non 0% chance that Shitrael will nuke Iran and that alone should be extremely alarming to the entire world. They would likely do it via a submarine launch close to Iran's waters such that interception and even warnings would be difficult, if not impossible. And you just know that there will be a ton of "people" celebrating it as a "brilliant" attack, without stopping for even a single second to consider the implications of such an extreme escalation, not to mention the downstream effects.
Iran’s supreme leader “fires targeted shots at hospitals and residential buildings in Israel”, Israel Defence Minister Israel Katz was quoted as saying by the country’s Channel 12 broadcaster. These are war crimes of the most serious kind
It's not a war crime because there were a khamas base there.

Every accusation is a confession.
There was a military target there. Shitrael calculates stuff like this so they never have a 100% loss. Putting a base there, surrounded by civilian buildings as human shields, ensures three things:
- Softens the blow of the impact
- Makes it harder to target
- Gives them ammo to use for their propaganda to accuse Iran of targeting "civilians" (more like invaders)
Most vile scum the Earth has ever faced.

How important is this for China? Would they actually intervene to prevent it from happening?
offer
An offer only has value when there's mutual trust.

What's Iran's strategy here? From the footage I've seen, the bombs that Isntreal drops are at least 3x bigger in terms of destruction and damage, especially when comparing the rising smoke. And of course they've murdered much more civilians. Why is Iran not getting more aggressive? Are they gathering more intel and/or preparing for an actual decisive attack? I know that it's important to keep your capabilities hidden, but they're taking way too much damage already. Why do they keep allowing Pissrael to take out prominent army members or even researchers? Are those people decoys or just not very important?
It seems like Isntreal is going to accelerate and intensify their attacks. Not to mention they'll pull out some unexpected trump cards. Like the terrorist car bombings. There's no level low enough they won't stoop to. Chemical and biological weapons aren't even out of the picture anymore. They are rabid, extremely dangerous, unpredictable, and highly treacherous. There's no room for hesitation here. They are hell-bent on the collapse of the Iranian regime and they will accomplish that any way they can, including completely obliterating Iran from the face of the Earth, as we've seen in Gaza.
And considering how many of their cockroach spies have infiltrated Iran I'm not surprised that other Arab nations have been mostly silent on Gaza. They likely have agents in the highest levels of government in all the surrounding areas, to keep the puppets under threat and obedient. Likely also true for Europe and NA.
Israel will probably either concede
I doubt this very much. Not that they won't claim to concede, but that they will never keep their word. They'll likely only ceasefire until they can either resupply or come up with a different strategy. Then they'll attack again.
They have proven to the world that they absolutely cannot be trusted. Their word means nothing.