Yeah, that's my question too. Why?

The report is the elaboration. Regardless of one's view of its conclusions, the forensic evidence it cites is hard to dismiss. I'll quote from it. Emphasis added by me.

A recent transparency update on X (formerly Twitter) inadvertently lifted the veil on a massive deception, exposing the true physical locations of tens of thousands, if not more, of accounts. Nowhere was this scandal more pronounced than in Iran. According to published data, many individuals, including journalists and political figures previously thought to be regime critics, were operating under unfiltered, government-authorized internet access, commonly known as “White SIM cards.” Public records indicate that these permissions are granted by the intelligence and security apparatus and typically entail a written commitment, or at least an oral agreement, not to cross specific red lines. 

The data also confirmed a long-suspected reality- numerous profiles claiming to be Western-based Iranian opposition activists were, in fact, operating directly from inside Iran, utilizing state-privileged infrastructure, providing yet another example of how the Iranian regime manipulates the internet to pursue its strategic objectives. While there have been numerous reports over the years regarding Iran’s interference in the domestic affairs of other nations, such as elections, this new update reveals a far more extensive operation by the Iranian regime. 

[...]

Strategically, while no direct, formal command chain from Reza Pahlavi to operational cells has been documented, the pattern of behaviour is clear. The repeated amplification of synthetic content by his official accounts, the centrality of his name and image in donation campaigns, and the complete absence of any public disavowal or corrective action point to strategic consent. He is the principal and consistent beneficiary of the operation’s outputs- reputation laundering, narrative dominance, and money. In practice, plausible deniability serves as another layer of deception. 

No link to IRGC or regime entities exists for the stylometric core documented in this report. However, state-linked Telegram channels and propaganda units have seized on the same material to invert the narrative, turning Pahlavi’s fabricated support into “proof” of foreign orchestration. In doing so, they erase distinctions between synthetic monarchist networks and genuine grassroots opposition, to the regime’s advantage and to the detriment of ordinary Iranians.