I used Bard after trying unsuccessfully to decipher the wikipedia page and Bard says, according to IEEE 754, nan < nan should return false (0); while nan > nan should return false (0)
I don't think "good English vs simple english" plays into this.
It's not like the problem for technical articles being impenetratable on Wiki is that Wiki doesn't have an intermediate level between expert-talk and simple english.
It's just that it doesn't have simple english explanations of some technical topics.