As a growing number of instances block journa.host, I'd encourage people to steer clear of the narrative that Mastodon's culture is somehow anti-journalism. If you're looking for a natural experiment, take newsie.social — I could be wrong, but as far as I know there's been no widespread blocking of that instance, which also predominantly hosts reporters. This is about the moderation decisions made by a particular instance, not some broader antipathy for journalism.
@josh Seems to me the issue was caused by one person's actions who has been temporarily suspended. To get federated again with servers that defederated them, they need to address that with those server admins to know what they need to do to address concerns permanently. Meanwhile, it is common for users to have accounts on more than one server in case they can't login or there are issues like this.