And yet it's not really even academics or SJWs, D&D has always been somewhat irksome to the left.
Let's not forget that for many years it was the Religious Right that dogged the hobby.
•Jack Chick Publications and the Dark Dungeons fiasco.
•Bothered About Dungeons & Dragons
•TSR forced to remove Demons and Devils from AD&D 2ed.
Moreover, there are quite a few tropes that do not sit well with the more conservative elements in society.
• The whole premise that a village peasant can become a high level fighter that commands troops and has domain over a large territory is based on an egalitarianism that runs against the whole class system mind set. Of course, social mobility does appeal to the vast majority of Americans, but being British I am more familiar with the right being the more "know your place" types.
•The principle of Noblesse Oblige is central to the fantasy tropes common in D&D and similar games. And it cuts both ways: This means that if the BlackEagle Baron is a douche, then the PCs, peasants or otherwise, are pefectly justified in usurping him and Bargle too. Oh and taking their stuff. Righ out of a Trotskyite revolutionary's handbook.
• Multiculturalism: most PCs in B/X and AD&D spoke more than one language and Halflings, Elves, Gnomes and Humans all live cheek-by-jowl in campaigns like Greyhawk and FR. Moreover, they interbreed! Miscegenation is a big no to many on the right.
• Loose Borders: in many adventures and campaigns that I have read, the PCs go wandering across nations and regions without a great deal of difficulty. Freedom of movement is kind of taken for granted. No talk of building big walls unless it is to keep White Walkers out.
Thirdly, constant bitching about paladins to the point where in the name of equality, every alignment got a paladin
Actually the rules for Paladins of all alignments has been around since Dragon issue 106 with the article Plethora of Palladins and the Anti-Paladin even earlier.
Forthly, the whole orcs/drow being evil thing.
From the little I know of Drow Society in published campaigns their society seems to be a rigid hierarchical theocracy. And these guys are the villains.
Hobbits OTOH, who are generally considered the nicest of nice guys, are generally supposed to live in idyllic agrarian communes with a rather equal distribution of resources (I cannot imagine halfling beggars in the typical "Shire" nor extravagant palaces either). The Pytho quote ""Anarcho-Syndicalist Commune" spings to mind.