That prediction is so vague and broad it's not surprising nor crazy that any such thing would happen. There are multiple different unrelated ways that sort of thing could theoretically happen that can be as simple as situational analysis.
The word "racist" here is also about as meaningless as "eater". "ONE DAY, A MAN WHO EATS FOOD WILL LEAD TO THIS SITES INDEFINITE DEMISE, MARK MY LINGUAGAY"
Ho chi sock literally screencap this I'm a prophet.....
Facetiousness aside I think you are making multiple logical mistakes, you speak of this like it's a vindication and a reinforcement of some kind of conception around "racists" but really I think you just identified something like the concept Edward Dutton has of the "spiteful mutant". Someone who goes utterly against norms to an extreme degree, whatever they perceive they are, not within some logical basis but, as the name implies, spite, and contrarianism. Maybe they aren't QUITE the same thing but I've heard that term used to describe something of the sort. Of course, this contrarian sort will have cross over with people who take stances against the same norms and hegemony, but it's a logical mistake to identify the fundamental thing here as "racists".
BUT I DIGRESS.
I don't have the screencap. I checked an archive and I didn't find it. I don't imagine someone would screencap such a post. Prediction screencaps are usually taken if they are 1. timely, and 2. have effort. If not those they are vague, like picrel.