ELI5:

It's a pithy sardonic addition to the chorus of scorn rightly directed at Facebook, rearticulating the consensus opinion that one consequence of their persistent malfeasance and its regular public disclosure is a profound loss of trust, such that genuine mistakes will never be perceived as such; and furthermore, this creates a self-perpetuating cycle in which embarrassing true bugs are interleaved with further documentation of bad faith in such a way that the distinction is not only lost but essentially irrelevant.

ELI5 of my comment:

The comment I replied to is not nearly as pithy as it thinks and comes across as more corny than commentary.

Better than I could have explained it myself.