Based on your understanding of those books, i understand why this is your conclusion. And your understanding is partially of course built on how people perceive those books, in this case the perception of Muslims of the Quran and how do they get the idea of social justice from it. From what you see, thats not appropriate for today and it will be a step or many steps backwards.
I'm not singling the Qur'an out ,from my perspective it also applies the the Bible too,how people percieve those books and the societies they build around them does seem to be tacking a step backwards.
The book itself however, in the context of its supposed purpose, shouldn't be perceived the way it is most of the time and shouldn't result in the things you see neither. By this i mean, it neither promotes theocracy, or promote its followers to be static and not try to progress and advance their appliance of it with taking care of the changes that occurred in society since the time the book was revealed, or as in your opinion, written.
In the case of Muslims,there are as we know,some that do not allow for innovations,an example would be Salafi,there are of course others that do,same goes for some Christians too,thus progress for some isn't possible (well my idea of progress) whether they were revealed or not is for each individual to decide.
It can change, it builds foundations for social justice based on equality like i mentioned in an earlier post, it doesn't require religious men to hold authority over people, and since this is my perception, not all Muslim's, and you're not going to try to figure out what the book actually says, or at least think that its up for interpretation etc.... Then at least put in mind that some societies took that book as i do, and have accomplished a good community fit with today's standards, such as Malaysia or Turkey, to an extent of course, no country is perfect.