@gemlog 🤣
I don't think it was intentional, I've taken a look at how other instances use them and most use Dedupe and AnonymizeFilename in conjunction — they work just fine that way, but if that was the intended use case, why didn't they merge them? 🤷
Anyway I've fixed mine with a one-liner — not a proper fix and it might interfere with other filters so I won't submit it, but it works just fine in my configuration.