Shadowbanned means "in the sense that the server sees the domain and automatically flags the post," as you said, which is the behavior described in my original comment.
> Although I may not have the exact reason the domain was banned, I've been around long enough to observe that everytime a 404media.co article is posted and gets traction, the comments unanimously complain about the paywall and it gets flagkilled.
So I thought this is what you meant by shadowbanned.
I'm not sure what you are getting at.