Rohan and Gondor were settler-colonial feudal empires (as had been the kingdom of Arnor in the North and some of the elves). It isn't a terrible take that the Orcs fighting the settlers were good guys even if it wasn't really for the Dunlendings or the Southern/Eastern peoples.

Also Saruman was an industrialist and was trying to develop industrial capitalism so he is arguably a step forward from the feudal societies of men, orcs, and dwarves.