and questionable things regarding immigration laws
I mean… there have been some regrettable cases in Germany directly after the law declaring foreign sub-18 marriage to be invalid, like 16/18yold asylum seeker couples getting separated. There’s a difference between saying “we don’t recognise that, you’ll have to marry again under German law” and “we’re sticking you in two different accommodations in two different states because you can’t possibly be a family unit and that’s how the dice fell”. You can’t just blindly assume they’re not heads over heels for each other, no matter how arranged and young the marriage was, you have to look at the individual case and if everything checks out treat them eg. analogous to siblings when it comes to accommodation.
Iran only really fits half into the latter category because the people are vastly more liberal than their government.
And if you look at polls (can’t find them right now sorry) Iran is actually one of the least Muslim Muslim countries around when you drill down into dogma, e.g. belief in heaven, belief in angels, such things. The average Iranian is about as Muslim in their private faith as someone believing in reincarnation is Christian.