Well, I can see the Iranian Baha'is not wanting to stick out their heads. Iran is definitely not what we'd call a modern liberal democracy.
Baha'is in more friendly places, I agree, it is a bit more telling how they position themselves regarding equal rights, within their own ranks and in general, for women, lgbtq people, and non-believers.
I'm not sure the top level of the Baha'i hierarchy would find itself justified within Baha'i beliefs to change the Most Holy Book. That might be asking too much.
But as with other religions, and especially ones claiming to be tailor made for present times, and which find themselves unable to express themselves in addressing our current situation, but instead resort to suppressing what they cannot face - I find them lacking, weighed and found too light, as one ancient text puts it. To my ear, they speak to the past, and an idealized past that would not have been recognizable to its inhabitants, at that.
Denial and suppression, which the Baha'is in Iran are facing : terrible! And yet, their spiritual hierarchy is busy denying and suppressing basic human rights: equality before the law, regardless of the shape of one's body parts, or the stirrings of one's heart.