> The company in June 2019 removed 4,779 accounts it said we linked to the Iranian government. Most of those accounts tweeted international news stories with an angle that portrayed the government in a positive light, while others were focused on engaging in conversations about Israel, and another subset used false identities to target global conversations about Iran, Twitter said at the time.

Also, I can't find a recent source, but Iran censors their people's internet, including Twitter and Facebook. This article from 2013 says they lifted the ban, but then shortly after re-banned it. So it's not even clear to me if legitimate users can even use Twitter. https://mashable.com/2013/09/16/twitter-facebook-iran/