Additionally, all this bloat and lack of structure makes it hard to search the text for both humans and machines.
Not saying that Slack is better, it addresses some of the structuring and some bloat problems, but adds distraction and encourage discussion bloat instead.
Is it a chat client? A knowledge base? A conference call? A command line? Who knows!
Which is totally why Slack isn't popular with businesses. /s
Just because you personally haven't found it useful, doesn't mean hundreds of thousands of other business users haven't.
I tried emailing longer form things at my current job and rapidly hit a cultural wall: people _do not like_ getting long emails, or emails with more than 1 or 2 replies. Slack people apparently have no problem with because it's "lighter weight", but I struggle to see how always-on disruption is lighter weight than check-it-a-couple-times-per-day email.
I think a deeper problem is lack of delineation of responsibility and adequate planning. Slack & other "always on" communication systems make it easy to say "why plan? I can _just ask_ when I need to know something" or "we'll have a conversation" rather than specifying & recording or relying on a more rigid interface like a ticketing system.
tl;dr: get off my lawn you dang kids!!