Censorship on c/politics

I posted this article on c/politics and it was quickly taken down by mods. I was informed that the reason was

Rule 1, no social media or blogs

However, c/politics rule 1 states:

Post only links to articles, Title must fairly describe link contents. If your title differs from the site’s, it should only be to add context or be more descriptive. Do not post entire articles in the body or in the comments.

I am curious if all substack articles are removed from that community, or just ones that the moderators disagree with.