Iran has official discrimination against both ethnic and religious minorities.

On the other hand, Jews had to leave the Muslim countries both in Northern Africa and the Middle East, with the total Jewish population there shrinking from hundreds of thousands to hundreds. Compared to that, Iran, from which only 70-90% of Jews left, looks not that bad. However, there were testimonies that members of Jewish families aren't allowed to leave the country all together, so I'm not sure if everyone is staying there at will.