[Brian_K_White]

The title says the repo is a filters repo. Did the repo actually contain filter rules, or was it used to distribute the closed source plugin package?

I would argue filter rules count as source code as much as anything else. It doesn't matter if the thing reading the filter rules is not open source.

Aside from that, github intentionally hosts all kinds of content that isn't literally code. gists, pages, wiki, discussions, issues.

People also host books on github where the text is the code and git is the update system and github is the distribution system, all exactly the same as with a c program. It's not abusing the system like using the CI compute to do random other work, it's using the facilities for exactly what they are each intended for. github wants everyone to use and grow to depend on github for things like that.