Reading Sailer leads me to my beliefs about him. In particular, paying attention to positive and normative claims.

That's a very high standard, since not everyone makes a clear and simple thesis statement which can be easily found. But it's implicit to various degrees in much of what he writes. So if you read Sailer's review of a book literally titled White Identity (first useful hit for "steve sailer white identity"), does it not look exactly like what I said? Here's some excerpts:

The next half millennium is likely to go worse for whites relative to the Chinese unless we modernize our mindsets on race. Taylor continues summarizing the current orthodoxy:

"It thus makes no difference if a neigh­borhood or nation becomes non-white or if white children marry outside their race. Whites have no valid group interests, so it is illegitimate for them to attempt to organize as whites. Given the past crimes of whites, any ex­pression of racial pride is wrong. The displacement of whites by non-whites through immigration will strengthen the United States."

As you can see, today's PC party line is a farrago of empirical and normative assertions

...What are the prospects for white identity politics emerging as a self-conscious, public force in America? I'd guess: not good. This is not to say that white identity politics won't continue to manifest itself de facto. We saw that, for example, with the Tea Parties and the emergence of an overwhelmingly white movement to protect Medicare in 2009. But, white people aren't supposed to say: we're doing this "to promote the general welfare" of "ourselves and our posterity" (to quote the Constitution's Preamble). Whites aren't supposed to say that—and they don't like to, either.

...In other words, what historian Hugh Davis Graham called attention to in the title of his 2002 book, Collision Course: The Strange Convergence of Affirmative Action and Immigration Policy in America, can't go on forever. The mounting "racial ratio" of nonwhite beneficiaries to white benefactors means the system will inevitably break down under the weight of numbers. At that point, white consciousness could be forced into existence. In the meantime, we can all be thankful that Jared Taylor has been thinking ahead.

Every line is consistent with the claim that a White identity does not exist and its existence would be good, from the complete absence of any criticism of Taylor to the first mention of Chinese competition requiring a coordinated White response to invocation of sacred scripture (the Constitution) to the claim that disaster will reveal the problems of a lack of a White identity, usher it in, and Taylor's work will have been meritorious for helping usher it in.