Fightweets: Conor McGregor's place in MMA history

Nothing to see here, folks ... nothing besides the aftermath of one of the most historic evenings in the history of mixed martial arts, that is. Let's get right into the questions.
Conor McGregor's legacy@passionatepatk: Now that Conor has two belts at the same what does that mean historically? What if he retired today? Too soon to discuss?
If Conor McGregor retired right now, he'd do so as a legend of the sport and an all-time great.
Start with the most obvious fact: Exactly 23 years to the day