Me either. I read somewhere that his features suggest that he might be Ainu, which are native to the Japanese islands, and still exist there on the northern island of Hokkaido. I am sure that genetic testing will answer that question.
Unfortunately when you read the scholarly work on the subject the Auni are picked only because they are Asian and not of a purely Caucasian racial grouping. In fact there is no physical evidence for the conclusion that the Ainu are related to the Kenniwick man other than pure supposition and the fact they have some Caucasian cranial features.
The skeleton actually resembles the Zalavar a Slavic race as much as it resembles the Auni. In fact after reading much of the data I came across this gem I would love to share and I quote
..."we can reject this hypothesis for the craniometric data, for cranial discrete traits, and for dental discrete traits."
Why is it rejected mainly because it doesn't support the conclusion that Kenniwick man is anything but Caucasion regardless if it is Polynesian Caucasian which they seem to want to reject out of hand also. In fact here is the crux of the matter and I again quote
"Although Kennewick exhibits some features that typically (but not exclusively) occur in modern American Whites (Caucasoids), these same features also occur in moderate to high frequency among Polynesian populations (Gill 1986). If the Ainu are considered to be "Caucasoids," as they were first described in 19th-century anthropological literature, this might explain reports of "Caucasoid" features in the Kennewick skull."
Basically we will accept any hypothesis for the origin of the skull except that it is of European or Caucasian origin. It's bad science made worse for making assumptions based merely on political expedience.
What has happened is that the scientists involved went to lengths to find one group of people who share physical traits with Kennewick man but who in no way can be considered Caucasian while dismissing every candidate that was Caucasian.
I clicked your link and could not find your evidence. What I found was the following:
FYI, Ainu is old japanese guy.
Conclusion
We were unable to obtain reliable ancient DNA amplification results from the Kennewick samples. This means that either (1) no original DNA was preserved in the bone samples transferred to our laboratory, or (2) original DNA was preserved in the bone samples but we were unable to extract it.
____________________________________________
Analysis of metric and nonmetric skeletal traits suggests various biological relationships or lack of them between the Kennewick remains and known human populations. Comparisons were made between the Kennewick remains and modern populations for which extensive sets of measurements exists. Comparison also between these remains and Native American remains known to come from archeological contexts dated to thousands of years ago, although in the latter case, Drs. Powell and Rose point out, relatively small numbers of remains are available for comparison. For these latter comparisons, the amount of statistical variation is greater and more quantitative manipulation of the data are necessary to assess similarities or differences, making conclusions more tentative. Powell and Rose did a comparative analysis of metric and nonmetric characteristics of known worldwide human populations, using the Howells and Hanihara databases which mainly include recent human populations, including craniometric data for 380 populations (N=8,833). This analysis indicates that the Kennewick remains are not very similar to any modern ("late Holocene") human populations, although the shape is most similar to Northern Asian populations (e.g., the Ainu).