No, not Redcafe specifically, but we are here now on Redcafe talking about it and places like this won't show on searches. I said that people have been talking about it since the books came out, which they have, but because it's ordinary people duckduckgo won't notice. Jon Stewart and Pete Davidson will show on those searches, random people won't.
Here's a 2011 article, predating Rowling's heel turn by about a decade: https://www.jta.org/2011/08/26/ny/is-harry-potter-anti-semitic
The Rabbi concludes that the depiction isn't antisemitic, just like tons of people today conclude, but he didn't invent the question. He was asked. He also references another article about the same topic, because it was and has always been a thing.
If you like you can do a similarly restrictive search about Harry Potter and nazism, where you'll find few relevant hits. That doesn't change the fact that Voldemort and the death eaters are obviously inspired by Hitler and the nazis, and that this has been acknowleged since the books came out as well. This was something we talked about in like 6th grade at school, but DuckDuckGo doesn't seem to register that.
Sure, somewhere on the internet there's always someone, who talks about something. But you can't find that for a reason, because barely anyone cared. Now, 20 years later, it's a topic? Why? What has changed? The books have been there for 20 years. They haven't changed. It's the opinion that people hold of the author that changed, for statements, however offensive they may have been, totally unrelated to the content of the books.
Also the article you've linked literally starts with: "When I saw the latest Harry potter film", not book.
And for what it's worth, when I change the search to "harry potter nazi" with the same time parameters, the first hit is an article that starts with:
"JK ROWLING made the "chilling" discovery that villains in her books used the same twisted logic as the Nazis when she visited a Holocaust museum, the author has revealed".