@atomicpoet As far as I know, although they are still sharing their news on Twitter, none of them are officially doing it on Mastodon. Many Mastodon feeds are created by user-made bots that extract content from Twitter. They simply wanted something to fill their paper space, but none of them actually want to use Mastodon. They are resistant to change and prefer to stick with Twitter. To them, Mastodon is just one of many news sources that they will trash within 12 hours.