Comment federation

I subscribed to !news at . . . well it probably does not matter. I receive the news the moderators are posting there, but also every single boosted comment anyone makes on the news stories as separate inane postings on my mastodon feed(!) That can't be the way to run a railroad! Can comment reposting be disabled by moderators or can it be suppressed by users? Because othewise, the news feed subscription is a poison pill to my fediverse-based feed.