First off, I'm not British or frequent brit/pol/. I'm not telling you things based on my desire for dank memes about civic nationalism or muh Hitler, I'm telling you what the truth is based on both myth and how you write it, and what Tolkien stated on Orcs.
You fail to understand what Orcs represent because you're fixated on injecting your politics into a book that has to be viewed entirely separated from politics. Myth is not informed by politics, politics are informed by myth. Myth only draws inspiration from the moral truths of the world, the Aesops if you will, or to use your cancerous fucking jokes, myths are inspired by memes on morality. The reason thus why myths feature such common ground on many things is because morality is objective. The closer a myth is to objective morality, the better a myth is. Thus you can also state that European myths are superior, but that's another story.
Ideology is the death of morality and is also the beginning of modernism.
The Orcs being the proverbial enemy is what then informs politics.
When I say "The Orcs are German", it means that to someone that fought in the trenches of WWI, the Germans seem like Orcs. The person that wrote the Orcs was such a man, hence why the Orcs are seen as machine using destroyers of nature and their portrayal is interwoven with that anti-nature sentiment, because ultimately that's how Tolkien viewed his enemies of the trenches. But Tolkien also understood that it wasn't just the Germans doing them. He didn't write the Orc, the Enemy, in the way he did on purpose. He wrote them this way because
1. That's how he himself understood the Enemy, and one cannot be impartial in such matters. His way of unintentionally injecting his bias was giving the Orc the anti-nature theme. This guilt over how he ended up associated the Orcs with the Germans later manifested in a desire to make the Orcs sympathetic (which would never have worked)
2. Everything ELSE about the Orc, the Enemy, was written this way because it was drawing on moral truth. The Orc is the evil being, the one that follows evil and does evil, and which all actions are worth condemnation, and the foil to the virtuous actions of the heroes and the people that do good.
To a Greek at the siege of Constantinople in 1453, the Turks are Orcs.
To a German at the last stand in Berlin, the Soviets are Orcs.
These are a couple of examples.
Also, the whole "Men of the West vs the evil south" isn't the point of it.
It is stated many times that the Southern and Eastern Man's crime is simply having let themselves fall to the Shadow. But that isn't something inherent to them, it's inherent to all Men.
We were all marred in the beginning of days by Morgoth himself. There are just some of us who choose to turn back to the light.
Yes, of course the West is the ultimate symbolism for greatness in these books, because Tolkien is European and of course he's going to see the West as the best. But what he views as the "great West" isn't Gondor and Arnor, it's Valinor in Aman, or perhaps Beleriand under the waves, or maybe Númenor.
There are "Men of the West" because they choose to turn towards these places.