I don't get the blackhat angle. I think casting shade on this is a bit silly. The SEO outcome isn't 2 million SIM in a rack being soft touched by rubber gloves on a chain drive: real people want to see this stuff.
Wikipedia in Portuguese isn't blackhat SEO stealing.
Their volunteers are doing so, and will also include additional or completely different content that the English version doesn't have (especially so if the subject/topic/article is more relevant in Portugal/Brazil).
It would be like if YCombinator bought a new website called PortugueseWikipediainSpanish.cc and started to scrape all of https://pt.wikipedia.org/ then auto translated it into Spanish with no authorised CC licensing.
Not only is it Blackhat SEO, it's also plagiarism and unethical.
The plagiarism is going to get them in the end.
Is Plagiarism "blackhat" ?