The whole "Chinese Nationalism"-discussion warrants a topic of its own, but yes, I think you would be hard pressed to find anyone who disagrees with the fact that of CCP using the Japan hatred for own political gains on a lot of occasions. And that the leadership really don't want to look weak during this transition period. In many ways the nationalism is a double edged sword. While it has offered a way (along with economic growth) for the party to hold on to its perceived "legitimacy", as the ideological sway of communism faded, it has also posed a severe challenge on several occasions. I think there's a real fear of these sentiments getting out of hand, too. In fact, using the nationalism card is one way people successfully criticize the regime without getting into much trouble (of course there's a limit, but still). Playing with fire, and all that. But those who suggest that the protests is simply Beijing-orchestrated clearly knows little about Chinese nationalism.
(For those interested, this article by Yinan He, and Suisheng Zhao's "We are Patriots First and Democrats Second" are recommended reads on the topic.)