It starts with a title that includes an unproven assumption.
How could the writer possibly know that “90% of Windows 8 users hate it” in the first place? Since he does not seem to quote the source of the title, we can only presume that he used the classic technique of starting with a desired conclusion and found his premise through the time-honored process of rationalization.
He goes on to make this statement, which again is based on a false premise – that the PC market is going away.
I have been pretty positive about Windows 8 since about the time the penny dropped and I realised what Microsoft was doing: the PC market is going away, and Microsoft had to produce a product that straddles the PC and post-PC transition.
The PC market is probably not growing as it once did, and the advent of tabs and pads and smart phones has created a situation where “toys” are replacing the PC for people who want to do social computing and other somewhat light-weight tasks. Yet for those of us who write, who develop software, or who perform serious photographic or video editing (I do all four), the PC is not going anywhere. It is vital to getting those tasks done. Never mind the massive gaming industry and music editing and movie post production and so on and so forth …
The article itself is not bad otherwise, as the author clearly has significant experience with Windows 8 and breaks down the issues with it just fine. But when premises like the two discussed above are stated with no links to referenced articles or other evidence to lend credibility, then all it does is add to the tendency for people to assume and presume and not think critically about what they read.