The content of the website basically makes that point itself. It's mocking the whole concept of these vulnerability websites, while also presenting a real (but not very impactful) vulnerability.
Oh, right. sorry, I sort of bailed on the whole FAQ thing when it was silly joke after joke but I get it now. It's the onion news of CVEs.
It's real though, The Onion is largely fake/jokes.
The Onion almost gave up in the 2016-2020 period because their satire was overtaken by the actual headlines.