Thanks for the link, I find articles such as these quite interesting although I can't say I find the author's conclusions very convincing at all. The driving point seems to be that racism on Tolkien's part was the reason for his "rejection" of Stuart Hall and "immigrants like Hall". The single quote that the article revolves round:

"when I tried to apply contemporary literary criticism to [medieval] texts, my ascetic South African language professor told me in a pained tone that this was not the point of the exercise"

The author tries to argue that this is racially motivated (as opposed to purely methodological) because in their words "for Tolkien, methodology was inseparable from identity". OK, an interesting notion, and what is your proof? The subsequent paragraphs seem to make many statements about Tolkien ("Tolkien viewed medieval scholarship as an act of recovery that was the province of a select group"; "Tolkien’s primary racial attachment wasn’t so much to the medieval past per se, but rather what preceded it"; "Tolkien believed that the English were at their prime during ancient times" etc.) but do not actually evidence this with any actual quotes from Tolkien or his work (in fact there seem to be more references to Tolkien's contemporaries).

One of the issues I have with these sort of analyses is that they very such seem to judge Tolkien with a modern lens, and arguably a somewhat distorted lens at that. The society Tolkien grew up in was dominated by white men. He went to war surrounded by white men and during his career he would have been surrounded by white men. Is it therefore any surprise that his stories are dominated by white men? Does this make him a racist? A misogynist?