I disagree with the article. Slack is invaluable for my needs as a software engineer. However, none of the people mentioned in the article are software engineers. Different jobs require different levels and forms of collaboration. Maybe collaboration between journalists can and should take a different form than Slack. That doesn't seem very surprising to me.
For devs, it is just too much noise to have any reasonable conversation: maybe because writing emails ensures that writer/sender thinks more about what to write in email. Or because we try to check email only twice a day (so that we are focusing on actual development).
We tried using for checkins and build statuses but web page seems a better way.
Just way too distracting.. but maybe we are missing the use case.