Not a Javascript expert (and no knowledge of how FB work), so one question: Why, just why?
Many of us are very privileged with the tech job market, that isn’t the case for everyone.
What do you mean threatening? Are you 5 years old and scared of words and also unable to interpret hyperbole?
Perbaps you can guess from my comment here that something rubs me the wrong way too. Are you obligated to care about that?
If I tried to suggest that you inject at least one "this wiill kill you cat" in your free public works because the dry lack of life rubs me the wrong way, what would be your response?
This is not the way we communicate on Hacker News and I will not validate it with a response. Refer to the guidelines if this is unclear.
"This might change or break at any time" isn't nearly as good a deterrent as "This will change every release. Don't use it directly, use the public interface at <insert location>".