This topic has very much been derailed, but in answering OP's question, ^ this needs to be emphasized.
Sayyid Khāminiʼī's statement, too, is not a fatwā (though I'm not surprised that the Orientalist reporting on this in Western news sources would elide the difference between a fatwā and a decree specific to the operations of the Iranian government), and his justifications behind it pretty clearly relate to Iran's relations/historical experiences with the states now producing the particular vaccines that he discussed. I have no idea how this ruling could be extrapolated to apply to Sayyid Khāminiʼī's followers in Western countries who are receiving the same vaccines domestically that their non-Muslim neighbours are, and I've yet to see any fatwā from him to this effect.
The discussion over the last few pages about biological experimentation and the speed with which vaccine trials have occurred is by and large irrelevant to scholars' statements on vaccines. Iran has already administered 700,000 vaccines and just purchased 60 million more from countries its government is friendly with (and thus doesn't have any reason to fear biological warfare from).
https://www.ctvnews.ca/health/coronavirus/iran-to-purchase-60m-russian-vaccines-as-coronavirus-surges-1.5389677