I think what turns people off of this is that the phrase “Citation needed” carries an additional connotation of passive-aggression and is not a great way to ask for a source. It’s most notably used (outside of Media Wiki) as a rude way to say, “I challenge you to back this up” at best or “I know this is bullshit” at worst.
"But that phrase doesn't really express curiosity, more unwillingness to accept. Anyway, it isn't a quote."