I used FB Workplace while at FB and strongly prefer it to Slack. In Workspace there's a clear delineation making a new post and replying to one; this means it'

I used FB Workplace while at FB and strongly prefer it to Slack. In Workspace there's a clear delineation making a new post and replying to one; this means it's easy to skim through new posts in a group to catch up, and only dig through a long reply thread if its relevant. In theory Slack has a "replies" feature, but everything in the product encourages you to just dump discussion into the main channel. Making a new post shouldn't necessarily be heavyweight, but it should at least cause you to pause and ask "does everyone in this group need to know this?"