The fact that it's satire doesn't make it untrue.

Not just that. The fact that it's satire means it's at least somewhat true.

However if the satyrical speaker did not believe that they had a duty of care to the truth, then it is bullshit[1].

[1] Prof. Harry Frankfurt, On Bullshit. http://www2.csudh.edu/ccauthen/576f12/frankfurt__harry_-_on_...

Not really, that does not follow. It is possible to speak the truth by accident.

It is also possible to arrive safely at your destination via reckless driving.

It is equally incorrect to assume that someone who speaks "without a duty of care to the truth" is saying something true or false, if given no other information.

Indeed. It is just something someone said once, not necessarily wise to reach other conclusions from.

It does seem to be a reflection of how the world works though. Most promotions risk being promoted to your level of incompetence because they are happenstance. They mostly occur either when you're joining a new company or someone leaves/company is growing which makes room.

Being promoted because you are excelling in your position and taking on responsibilities of the one above is the rarest main reason from what I have seen.