Mainly because the computing industy is very unstable. Any discussion on technical advantages of some product generally must include a look at backward-compatibility with existing systems. And once you do that, you must dip into politics and the current climate.
For example, you can have the greatest OS. Let's call it BeOS, though I have never used it and have no idea of its merits, but let's just assume. A "neutral" party can proclaim its technological superiority... however that news is fairly useless, because there are many factors that keep the technology from being adopted, such as MSFT's illegal strong-arm tactics.
Any neutral party would have to factor in the current climate and in doing so, become nearly impossible to differentiate from an advocacy. They'd have to make judgment calls and have opinions.
With all the Slashdot articles on how Stallman is a power-hungry beast and how ESR is a prima-donna... I actually wonder how bad Slashdot is at being fairly objective. If it seems they're very pro-Linux, well, all technical people I personally know actually like Linux. When they say "Linux," they in some vague way refer to the entire gamut of Free/Open technologies that make their lives and work easier, including the BSD's. It's hard not to appreciate it, unless you're a curmudgeon who doesn't think it's technologically stunning. Slashdot certainly has BeOS reviews, as well as of Apple's Darwin, Google, and other products from proprietary companies.... I don't know about anyone else, but my in-depth knowledge of companies such as Cisco and IBM rivals anyone who gets feeds from the NYT, Economist, CNN, or WSJ. My knowledge more closely approximates insider knowledge, which gives me a financial advantage. That is news.
The message can not be separated from the zealotry, because zealotry drives the industry right now. The only saving grace is that one can intelligently think about her zealotry.
Now, I voted this MLP up because I think someone might take his recommendations to heart and create a truly incisive tech journal. There are recommendations in that article that waste no one's time. But to that article, I add there is a fundamental misunderstanding of a site like Slashdot. It is only advocacy if you approach it from a classical journalistic worldview. In reality, its setup is far more complex than old conventional wisdom understands.
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