We say 'muslims' follow a foreign influenced, number two Islam, when it is a majority, not all.
Likewise, Persian means some did it, not all.
Do not get hung up on who is being blamed and no-one is blaming any modern Persian! Unless they are continuing with the nonsense.
Please read Conspiracies Against the Quran: by Dr. Syed Abdul Wadud for a good book on this topic of foreign and otherwise; those who have tried to destroy the pure Islam of the Quran.