Is the problem the storage cost for hosting them, the HDDs? I'm sure they can be offloaded to cold storage because most of that slop won't be opened by anyone.

Arxiv doesn't need moderation. Nobody is asking for Arxiv moderation. It needs minimal checks to remove overtly illegal content.

> Arxiv doesn't need moderation. Nobody is asking for Arxiv moderation

Seems like a lot of people are asking for moderation. And moderation is a pretty big part of the existing offering[1].

[1]: https://info.arxiv.org/help/moderation/index.html