This is based on the discussion in forum #64808 specifically:
As for Black Candy, if there is anything it does is made me read the series it is based on. What keeps it running is new rule like this , which pretty much means free ticket to get an approval.
That said, unless the rule about doujin is reworked, it's a loss cause to discuss about this.
Currently the rule potentially in question regarding Doujin is here: forum #63240
The rule was based on the existing unwritten policy that an approved comic should generally continue to be approved.
Both the original unwritten rule and the defined one were really intended for long running comics or fixed length ones that were already on the site.
For example: pool #714 Tag Dream
Anything new images would be approved and if any old images were missed they would be approved even though the artwork was not great.
That being said I suspect there is some confusion. The written definition of the unwritten rule (cannot speak for the unwritten rule itself) was not intended as a free pass for two cases:
1. There is a doujin on pixiv 50 pages long and 5 pages get uploaded then approved. The next 45 pages should not automatically be approved via the rule.
At least half should still be required to fall under the fill rule.
2. Where a doujin is uploaded from the middle or latter. Only when the comic is uploaded from the start should it be considered since someone could be using the artists better artwork to "cheat" the system and point 1.
Being the creator of the "rule" in question please realize that it is open to any and all modifications needed or can be totally scraped if unworkable.
Its existence is still based solely on the unwritten policy regarding doujin.
I never intended the rule to apply to scanlations. If it cannot be sourced back to a website where the doujin is being put up for free (pixiv, home page) IMO it shouldn't be here anyway.