I don't believe it actually uses the preferencestoken either - the change to the API certainly doesn't appear to have broken anything. I'll submit a patch to remove the retrieval.

Hello! Closing this as resolved as I am still maintaining this and there's no point having this task open.

For what it's worth, this bug breaks the current implementation of FireflyBot's task 11 - notifying authors of drafts on enwiki that they are coming up to the point where they can be deleted. I realise that's a very small matter in the grand scheme of things, and I can rework the implementation around this bug, but thought it worth noting that the bug has "real-world" consequences, even if very tiny ones.

@Peachey88 Yep, that's the method I used to create the account.

Should the Wikitech account have been created automatically? The instructions don't specify creating one manually...