The Coati (a small member of the raccoon family native to Brazil) is also known as the Brazillian aardvark. The reason that it's known as the Brazillian aadvark is that someone made the phrase up and added it to Wikipedia - but the coinage gained traction, because journalists copied it, and this led to a citation for that name being added to the article. Now wikipedia is in a quandary... there are, thanks to lazy journalists, people who know the coati as the Brazillian aardvark, because they read that in a newspaper... so is the hoax now true?
Does it become true if the dord of references to that name reaches a certain level?
Does it become false even though people do use the term, just because the etymology of the word was a hoax?