>East Asians are less represented in leadership because leadership perceives East Asians are being less leaderly.
Can you provide evidence that this is what's going on instead of something else? Plenty of leaders in the US are East Asian.
>using the symptoms of racism in order to justify the racism itself
You didn't present your own evidence that the 'symptoms' are actually due to racism. The author presents a compelling explanation backed up with data that explains what we see.
>Never mind that Japan is a world leader in innovation
The article quotes the Japanese government stating it believes it has an innovation challenge as well.
>You can't just assume that hitting a high IQ at an early age means that it cannot continue growing
IQ is relative to others the same age. This is evidence that East Asians develop cognitive ability more quickly than other populations. All healthy children continue getting smarter as they develop. This is all discussed in the article.