I'm confused too. The only bad thing I can see here is interacting with the Guardian. Otherwise, as you said, it's critical support. Obviously, Iran does some really disgusting things that make the fight against Imperialism only harder by giving libs extra ammo to paint anti-Imperialists as criminals. I'm not a big fan of optics at all, but it's very effective in cases like this. Just think of the unveiled women pics from the Shah regime and how much of an impact they had.
And besides the optics stuff, there's also the fact that the abuse of women and minorities should always be condemned, no matter what. There's just no excuse for such a disgusting thing