I am invariably going to see in the world of Slack, "IRC, why don't you die already". No, IRC is not going to die. FreeNode is alive and well. And while you busy slamming and wishing death of IRC, just check the memory usage of your Slack client.
Is there a reason IRC couldn't look like slack to the user? kiwiirc is an opensource webUI IRC client (demo at https://kiwiirc.com/ ). To my untrained eye it looks slack-ish, but not being a slack-native I'm not really sure what Slack's draw is and whether its something webUI clients for IRC can't do.
- history
- with search
- logins
- simple bots
- automatic content fetching (wiki/youtube Links, pics and gifs)
- file transfers that just work
- image pasting
- message editing
And probably others. Yes, those features exist in one way or another in IRC. The point is not whether you can or not; the point is how much time and energy do I want to spend to install and maintain those. I may have had the patience to do it a few years back, but I value other things now.