Already in the TLDR there is a figure of speech used to attack a point: "accidentally or deliberately".
In neutral speech, there is no need to bring that up, as everything is either accidental or deliberate. Yet people use this to hint at the "deliberate" part of the phrase while having the other part in there for deniability.
I disagree, I think people use it to emphasize the possibility that it was accidental. Without that phrase, such assertions tend to be interpreted with implicit "deliberately".
> neutral speech
Is not ideal or practical in the real world. It's a nice idea, but to best facilitate understanding we should recognize the realities (unfortunate or misguided as they may be) of how we actually use language.
(If you really want to imply "deliberate", but want plausible deniability, then you just leave out the phrase entirely. If you don't say "accidentally or deliberately", people will infer "deliberately", but you never actually said that word and therefore you have deniability.)
In neutral speech, there is no need to bring that up, as everything is either accidental or deliberate. Yet people use this to hint at the "deliberate" part of the phrase while having the other part in there for deniability.