No algorithim means that people get the updates they want when they're posted. Users get a familiar-looking client to bang out the quick updates.
Obviously the issue is someone will need to run it, but if you're not open to public signups then the moderation burden doesn't exist and it's just a case of keeping things updated.
Like email, I sign up for a Mastodon account on a server that suits my tastes. I then follow other accounts, on other servers, using a client - I use Ivory on the mac & iPhone (because it's made by the same company who made Tweetbot) - and those accounts show up in my feed in chronological order, like Twitter in the old days.
We've had RSS for about 27 years.
Google Reader was around for less than 8 of those years, and it has now been 13 years since it died.
This is something I wanted to push while working on newsroom CMS projects: giving direct input access to the CMS from external bodies - police, fire, ambulance etc. Posts could be vetted/edited by newsrooms, as with any externally filed copy, but turnaround would be a matter of half-a-minute or so. Either that or enable direct publishing permissions to said authorities.