[SpamCop-List] What's the point of devnull.spamcop.net when...

[Patto]

http://www.spamcop.net/sc?id=z794466317z3e4ce04cd12dd17ced83a4499bb51328z

A report is sent to abuse at fjdcb.fz.fj.cn for 218.66.186.249, where the 
message originated, and the IP address will go to the block list.

Sometimes reports are sent to multiple addresses, which is fine with me. 
When no valid addresses are found, then the report is sent to a 
devnull.spamcop.net address, so that the IP address will go to the 
blocklist anyway. That is my understanding.

But as in this case, a report is already being sent to 
abuse at fjdcb.fz.fj.cn, so why does SpamCop still wants to "send" a report 
to any devnull address(es)? Just curious, as it seems to be completely 
unnecessary.