Volcel jokes aside, that's unfortunate.
Overall, I do think China is on the right track. but they def. have their issues with trying to legislate morality a little too much.
I don't think Gianna Michaels/hentai is going to inspire the populace to take up arms in a capitalist revolution.
As stated elsewhere, I'm sure there is a reason, but based on the past history of pornography bans, there's very high odds that it's not all that good and not based on any actual logic.