Thanks for noticing.
Seems it's only an issue for mails sent through gmane (and getting scored), for people reading through gmane and relying on gmane.spam.detection.
Now let's turn to people reading lists via Gmane's NNTP interface. To be able to see Platonides's messages, one needs to not have any filter group=gmane.spam.detected action=discard etc. in their readers.
Why would that rule be there? Does any news reader include it by default? I haven't still seen spam on any gmane ml, which would require filtering.