Though the slang word looks like it originated in '71 and the cybersecurity use of it only goes back to '78, so perhaps it was a poor choice indeed. Though, with its similarity to the use by dictionary editors and cartographers, it makes sense why they would pick that term.
I only today became aware of the pedophilia reference for it and will have a difficult time unthinking thoughts of revulsion whenever I encounter the security-related term, but what can you do.
These are _always_ backronyms. _Always_. If anyone ever tells you that [random word that's been around for a while] is an acronym, they are _wrong_. (Possible notable exception for 'fubar'; that one's old enough now and probably really is an acronym).
It seems the exception is those terms with origins in military and academia.
Source: originally come from a time and place where you call your friends one for a laugh (and shout it at actual ones you know from cars)
See, e.g., https://csrc.nist.gov/glossary/term/nonce