1: Why must you segue into that?
Because it's a topic of interest to me and the unease our society feels about discussing it, coupled with the importance of it, are absolutely and perpetually fascinating to me. Any issue on which an entire society (planet?) of adults are perpetually lying to themselves and others about, and studiously avoiding dealing in facts about, is like an irresistible mental magnet to me. This is why I was fascinated by religion many years ago, before I lost interest in it. It was another topic people were wildly dishonest about, and spent a lot of time and effort lying to themselves and everyone else about. Of course, now being an atheist is much more accepted and en vogue than it was then. When being realistic about race reaches that level I imagine I'll lose interest.
2: Aren't current t-levels less relevant than when a person was growing up / bulking out their frame? Once you look like the hulk I think it's easier to maintain it?
Blacks reach puberty sooner and develop motor skills in infancy earlier, and are essentially adults sooner. This is undoubtedly related to the eternal complaint of young black men being treated like men, which you'll often hear about. A lot of black activists bemoan the fact that young black boys are not really permitted the same sort of benefit of the doubt, or at least not for as many years, as white boys are. There's a biological reason for it, as there is for
everything in human experience.
So, I would suspect that it isn't just a current t-level thing, it's a case of blacks being awash in higher testosterone level for their entire pubescent and post-pubescent life, as compared to other racial groups. A huge, unfair advantage. Objectively. Undeniably.
The only basis for denial of it is wish thinking, and cowardice. Not accusing you of this, btw. Speaking generally.
The proof is in the pudding, after all, look at the racial composition of sprinting, long distance running, basketball, and football. Boxing may be another example, I'm less familiar with that.