To my knowledge a lot of the big PC games that we see today appeal mostly to the western audience such as blizzard games taking the top spots and the next popular publisher for PC games being EA.
I would imagine that most of the Japanese gamers would end up being alienated by the platform as they wouldn't be interested in western culture centric games. What is popular about PC gaming in Japan are the dating sims, visual novels, and adult games but even then these games have a smaller audience compared to consoles. The most popular gaming platforms in Japan so far are portables such as the 3DS and to some extent the vita.
Since "hate" is a strong word this begs another question of whether Japanese gamers loathe PC gaming in general or just simply discontent with it.