I was sure I had used browsers which did that, if I didn't then sorry, I must be hallucinating.
I wouldn't call it FUD, I'm not suggesting don't use JavaScript, and we are already talking in this article about one crazy workaround because of the weirdness of modern jazz development!
The "this is JavaScript after all" referred to JavaScript tending to continue after errors (which it does in some cases, like a bad callback, or a whole file which didn't parse).