China has the surface combatants and submarines and aircraft and cruise missiles and ballistic missiles and torpedoes and etc to sink even larger vessels. So whats the point of this debate?
The point is people found some Chinese TV program (which happens to invite professional TV stars who happens to wear a gold star on the shoulder) very shocking, and decide to voice out the points that shocks.
My own understanding is Mr. Zhang Zhao Zhong knows what's his professioncy, but he always try to speak the point out in the worst way (or, you can say it's the most subtle way) - I said it, you didn't get it, it realized in a little off but mainly "to the point" way in certain future, so that I "decleared" certain information without leaking any information before those relative information has been wildly published.
One example, 2009 year end, he "clarified" China is indeed working on "4th Generation Fighter", but he implys J-10B is "our standard for 4th Generation Fighter", you may laugh about it at that point, but when J-20 shows up, you would realized Zhang has convoyed the message "we have 4th Gen Fighter program working", hiding behind false information "J-10B kind of fighter is the standard" - way before the "publicity" of J-20 itself.
In this case, he never said anything "suicide attack", but "swarm" Zumwalt's deployment. I see this very feasible, in peace time, when China don't want Zumwalt getting too close to some places; not to mention as early as post #2 has already mentioned, in combat, it works to a degree that the high-end navy bleeds more than the swarmer. And the last thing is China can always attack an opponent THAT MUCH EASIER when they are bleeding, with China's own high-end means.
These are all theoriatical analysis without actual intention of provoking (and damn, true strategists do not getting provoked by this kind of stuff) - but I believe Mr. Zhang dose convoyed the message he intended, to the audience he intended.