There seem to be people who think that the Islamic golden age was a golden age for science, technology, and philosophy, and that there groundbreaking advancements were made in that time period by Muslims and non Muslims alike. That is the impression I had for a long time.
But I have lately found out that there are people who claim that those alleged achievements are blown out of proportion and that the Islamic civilization did little more than translate the knowledge of the Indians and Greeks and reserve it through the European dark age.
They certainly did a lot more than just translate. To just give a few examples, algebra was new, ibn Haytham's (Alhazen) work on optics was new, ibn Rushd's (Averroes) commentaries on the works of Aristotle earned him the sobriquet "The Commentator" by Aquinas, I did this post a couple days ago on the "qibla problem" which is a rather unusual application of trigonometry to a 3 dimensional sphere which certainly couldn't have been translated by anyone, and so on and so forth.
Most examples of "people who claim that those alleged achievements are blown out of proportion and that the Islamic civilization did little more than translate the knowledge of the Indians and Greeks and reserve it through the European dark age" that I'm familiar with are trying to do so with a polemical point in mind. Usually they want to paint Islam or Arabs as inherently backwards for whatever reason. It's nonsense. I'd encourage you to simply read about the scientific works of the scholars of the age as they're impressive by any means in their own right.
Moreover, they continued after the most commonly cited end of the Golden Age, for example in the political science/sociology of ibn Khaldun, among many other possible such examples.