If you ask me, the term "PC Speakers" can be interpreted any way that you want. What the PC is used for and the budget of the owner makes a difference.
I have an HTPC that is used only for my home theater. I have a Yamaha receiver that is connected to the PC via HDMI. For front/center speakers, I recently upgraded to Paradigm Prestige 95Fs and 55C (the 55C was free with the pair of 95Fs). I have a Paradigm Servo-15 sub, and a much older set of Paradigm Monitor 5se MK III for rear speakers. At some point, I will upgrade the rears.
For my gaming PC, though, I use an old pair of Sony headphones which are good enough for me. Maybe, at some point, I'll change that, and I like the suggestion of using a reasonable pair or set of bookshelf speakers. For another PC, I have a pair of Logitech speakers which are also good enough for me.
To me, some of the speakers in this article look like they are filled with bling, and I would probably avoid them. Also, Bose has great marketing, but for the same amount of money that one might spend on Bose, one can probably get better sounding speakers from another manufacturer - especially if that manufacturer is one that is known for quality speakers.
If you can, I highly recommend comparing speakers side-by-side, however, that is not that easy to do for PC speakers. Often, one just has to take a shot in the dark. If expectations are not set high, then one will probably be satisfied with whatever one chooses.