Averroes was absolutely a Muslim scholar who commented on
Aristotle and those commentaries were translated into Latin and reintroduced the west to Aristotle. Christian scholars like Aquinas disagreed with the logic and conclusions made he Averroes but they respected him. This is all undisputed history, Aquinas himself makes it all clear in his master work Summa Theoligica. There was a time a thousand years ago when Muslims (particularly in Spain) did in fact have intellectual curiosity. That was stifled shortly after Averroes worked but that doesnt make him go away.
It should be noticed that Averroes was a contemporary of the Jewish philosopher Maimonides, who also championed Aristotle. This was at the end of the Golden Age of Spanish Jewry, so the relatively open intellectual curiosity of Islam at this time wasn’t in a vacuum.
Most of the known history written by Polybius and many others was destroyed - the list of known destroyed works by muslims would fill a library ... we have only fragments and references remaining.