It's allowed in the sense that we can't stop it! But also I think the interest is organic, and in such cases we don't fight the community—partly because that would be dumb (you can't fight the community and win!) but also because we trust that signal.
Since https://news.ycombinator.com/item?id=40725329 was the first of 14 (!) submissions, which keep getting flagged by users, I've restored it and changed the title.
More about that at https://news.ycombinator.com/item?id=40734677 and https://news.ycombinator.com/item?id=40734700.