I also felt like a lot of the developer tools looked nicer than their google counterparts at the surface but had major reliability problems under the hood where you would need to do a lot of turn it off and on again style operations.
It’s possible to run a really disciplined Slack where updates go in a ready-only channel, and people broadcast their work appropriately - but it’s really hard. Most people default to non-discoverable DMs and then stream-of-thought in public channels, which are both bad for discovery in their own way.
Posts end up being a bit more considered than a slack message, but still lightweight, and more discoverable than docs.
Shame Google nixed their “Google plus for workplace”, I would love to see this workflow used more widely.