No, it's not coincidence. There's a reason the five-letter word is not 'niggi' nor 'niggoe' nor 'niggoo'. '*****' was deliberately chosen as a subversion, a way of accepting that people would use that term no matter what, self-identifying in comradery, and affirming the shared persecution. That's the history and cultural force behind it.
Well then, I guess that settles it. I wish I could've been at the council meeting of the, "Black Brotherhood of Linguistic Entrepreneurialism and Prose" and seen how that vote went down.
Black Council guy #1: "My dearest Bretheren of the BBLEP, I hereby put notice forthwith and decree that the word, "Nìgger" should no longer be a stand-alone slur. I feel that something is unaccounted for and that our culture requires, nay, demands castigation."
Black Council guy #2: "Indubitably, DaeQuan, I believe you have clouted the nail on the proverbial apex. That being thrust to the forefront, how do you propound this matter be finalized?"
Black Chairman guy #3: "Exert your head for something more than a place to loll your derby! The antiphon is clear: A new word we shall make, and it shall be articulated among the purlieu, throughout musical endeavors, and even in everyday discourse. It shall be brought to bear at social functions, among friends, and in the place of work. The real meaning we shall keep secret to ourselves, all while tricking the millions of homosapians on the planet that that word is actually a term of endearment. Intellectuals the world over will ponder. Historians will excogitate. And Professors from the armpit of the United States, St. Louis, shall brood. We shall have the last laugh. The word, my brothers, shall be... 'Nìgga'"
Entire Council: "Gasp..."
Black Chairman guy #3: "All in acquiescence, say 'Yay'."
Entire Council: "Yay!"
Seriously, that's how it went down. I'd bet my life on it. Of course, I'm nìggardly by nature, so I probably wouldn't pay up if I lost.