It's an arbitrary stat, so the "first ever to do it" isn't really the important thing. The important thing is that he's an insanely efficient scorer for, essentially, a rookie (he's not even through his first 40 games, let alone his first 82).
To really be a "generational player," like a Giannis or LeBron, he'll have to become a high-caliber defensive player. I think he has the tools to do it, but so far his focus and intensity on that end of the court have been spotty. Of course, again, he's basically still in his first season's worth of games--rookies usually struggle on defense.