The article is not a problem.
From what I seem to understand, the "problem" is that someone got accused of being a Nazi sympathizer because they boosted the article, that had been posted by someone accused of being a Nazi, which made the .art admin want to defederate from all of them due to some (not clear) previous history they might have... but it just happens that the "sympathizer" is also the developer of a relatively popular Fediverse project and instance, so by blocking them by association, they're also by-association-by-association blocking a lot of people who couldn't care less about who develops the software.
If smells a bit like when people wouldn't want to check out Lemmy because the Lemmy devs host a "tankie" instance.