I discard Israel mistake, because their weapons are expensive and cutting edge technology.
Hamas or Islamic Jihad mistake is a possibility, but unlikely because the blast was huge, 500 dead.
Although the attack benefits Iran narrative, it's hard to believe that someone inside Gaza could do such thing intentionally.
This attack doesnt benefit Israel state, but a lot of people inside Israel is ill of hate since 7 October, so it's a possibility.
You can put one hundred more Iran flags if you want, but that doesnt mean you are a real Iranian.
You can be a hasbara in disguise obbeying stupid selfdamage orders, something common between Western undercovers idi*ts.
Israel state wants war and hate because that means money for Israel state, they dont care about their people as they proved oct 7th.
When I visit real Iranian websites, I see all in farsi, few Iranians speak English, and here there are a lot, what a coincidence.
My bet: most of "iranian" of this forum are German-Iranian idi*ts who post in exchange for peanuts from German state, as undercovers.