Hacker News guidelines encourages the linked title to usually be the title of the article. That was not done in this case, and if you read the article, neither the EU nor Europe is mentioned.
From the guidelines:
> If the title includes the name of the site, please take it out, because the site name will be displayed after the link.
> If the title contains a gratuitous number or number + adjective, we'd appreciate it if you'd crop it. E.g. translate "10 Ways To Do X" to "How To Do X," and "14 Amazing Ys" to "Ys." Exception: when the number is meaningful, e.g. "The 5 Platonic Solids."
> Otherwise please use the original title, unless it is misleading or linkbait; don't editorialize.
> If you submit a video or pdf, please warn us by appending [video] or [pdf] to the title.
Which is to say the chosen title of the thread was editorialized by the submitter to emphasize what they wanted to emphasize rather than the original title that the Homebrew Project used.
I'd recommend not reading into others' editorializations. Homebrew doesn't control them.