Does it really matter?
What you maybe missed (and I think its one of the things @Lucius wanted to say) is that mods should be more strict \when it comes to poorly written and redundant topics which this forum doesn't lack. And I totally agree with him, that's the only way people will spam less, both those that are opening such topics, and those answering them.
Also what I try to report regularly are threads on the same topic that are usually on the same board and I think only the first one should stay open and the others deleted or locked. I wonder why such reports generally remain unhandled if it is obvious that it only gives more space to spammers?
An example of one such situation where I reported duplicated thread, and it is still unhandled....
Maybe I got wrong impression, but I think that mods are more reluctant to delete topics that have more replies and that might be a case here.