It’s generally good courtesy to credit the translators when you’re taking another group’s translation. In the case of Danbooru, multiple users might’ve contributed, some more, some less. I’ve seen “Translation: the Danbooru fairies” on a few credit pages before. In this case, the editor obviously had no courtesy, but I’ve never seen anyone on Danbooru complain about not being credited, so don’t worry too much.
That's exactly how I credited them, but on the release post on e-hentai, I don't have the credits in the doujin itself.
(also fucking lmao, accidentally edited your post, sorry)
last edited at Jul 28, 2020 5:27PM