1. CNNIC do evil.
Because CNNIC did much evil before, including spreading the malware
mentioned above.

It is apparently pointless for to trust CNNIC.

2. CNNIC cannot do their job well.
A few weeks ago, CNNIC announced that .cn suffix (which is under
administration of CNNIC) is not longer available to individuals.
Soon after CNNIC attained a sharp decrease of .cn domain names, and
had to revoke the preposterous decision.

CNNIC so easily scewed up its primary duty, it might fail in other
duties.

So it's a Root CA with an incompetent and (potentially) wicked
organization named CNNIC behind.
Why would we Chinese bother to believe in it?

There is no political points above, right? It's all about common sense/
feelings.
I did not read Mozilla CA policies, however, if it conflicts with what
I addressed, I would suggest that those policies be reviewed.