My stance is the exact opposite, it's that they do have agency but that the constant articles in the West celebrating a chance for some sort of regime change actually gives the Iranian government the ammunition it needs to make them appear sponsored/non-organic.
It makes it worse that the West does in fact have a history of regime change in Iran, (that had, as its ultimate consequence, helped to install the current gov. there).
If we appeared a lot more indifferent towards changing the regime as such, while supporting the rights of women on moral grounds everywhere, incl our allies such as the Gulf states, we'd have a lot more credibility and removing agency from the protesters by the Iranian authorities would become a lot harder than it is now.