Not everyone has access to Iranian personal experience accounts. I have two friends and they differ in how they feel about the US/Israeli attacks. Both agreed that the Regime is bad and needs to change, but one felt that supporting her country against the attackers in this war, overrode that. The other had her doubts.
I think how one feels, especially from the safety of another country, depends on ones own personal/family experience?
Propanda is what it says on the tin. Iranians still living in Iran, feeling anger at the death and destruction around them, might be siding with their country against the attackers, and this AI generated content is aimed at countering that. Not everyone will be able to discern that it's fake. Putting out a false narrative has the additional advantage, that as we realise it is false, we end up not trusting anything, even the truth when we encounter it.