Trust me, 0/9/0 is also intentional feeding, at least around my elo (Which isn't even very high).
I don't care if you're against Dyrus in lane, if you go the entire game without getting an assist, you're not being of any help to the team. You're just a giant vaccuum that sucks creeps into it and outputs nothing.
However, it's all context sensitive and you have to keep that in mind while doing tribunal - Gotta read chat and gotta make a decision based off everything. Seeing someone with 0/9/0 triggers a warning bell in my head, but it doesn't lead to a punish by itself.