Indeed, it's very much the same thing.
I have brought up the similarity to email, but it's been of limited help. I'm hoping that moving posts between topics will become possible at some point, which will allow me to clean things up.
Re:Salesforce is in talks to buy Slack
by JoshTriplett on Sunday November 29, 2020 @01:11PM
(#25246794)
It's already possible to move posts between topics. In the menu for a post, choose to edit the topic, and once you start changing it there's an option to move just the post or move later posts in the same topic.
This has been a problem ever since email: many people reply to the last mail they have from a list, sometimes changing the subject, and then get surprised when the mail is threaded under the mail they replied to.
I've seen this occasionally on Zulip instances, but a reminder and a suggestion that the topics are like email thread subjects or forum thread subjects tends to help.