Well there's good reason for it since a small minority, for some reason they believe it is a large majority (it's in their description), of white redditors are actually racist and the history of institutional racism within the past 500 years has largely been for white people. This institutional racism has for the most part diminished over the past 50 years in America. Sadly, a good portion of subsets within POC like black people are largely generalized against, like black people being at a disadvantage being called lazy for not getting a job or having low SAT scores, due to several factors largely remaining from the history of slave trade/second class citizenship in the US. This is what the article White Fragility is about. White people not understanding they are privileged just like how most Americans do not identify their privilege.

However, with some of the good examples of racism the subreddit brings up, there is a clear agenda not to point out real racism, but to fight racism with racism. It clearly fosters a subset of people attracted to anti-white ideas that are so similar to the ideas they are fighting against, it is just sad. It also misnames itself since white fragility often times is the idea that SOME white people take conversations based on race as an attack. Most of the posts are instances of real racism not a misunderstanding of privilege. Instead it should be named racistsWhitePeople, but race based subreddits turn evil eventually regardless of their intention there are several examples of this.

With all that being said there are also problems based on creating a subreddit only focused on white fragility as it ignores, just as the article "White Frigility" by Robin DiAngelo, ignores other inherent privileges that frustrate those who inherent them. White fragility largely ignores the fact that all people who are inherently privileged have this frustrated reaction. Look at yourself whitefragility, you are largely Americans. The people who comment on these subbreddits about white privilege in America ignore their own privilege and identify all white people under a single umbrella. Speaking about who are heavily benefiting from inherented privlige when they themselves are pushing and allowing their nation to create another generation of privileged people based on slavery is disgusting. Look at how much and how often America and all first world nations are becoming ever so more privileged off the barely living unpaid labor forces of China, India, Southamerica and Africa. There are several types of privileges and largely the current state specifically this of this subreddit ignores every other type of privilege. All they state general remakes about a privileged section of the world based on their skin color when they themselves, as a largely English speaking American based subreddit, are recreating the thing they are fighting against.