I don't disagree with the article's premise that Slack hijacks your brain, but as someone who worked for a far-flung company that didn't have Slack, and instead relied on email/phone/web meetings, I NEVER want to go back to that.
Even less extreme, I worked at an all remote company that primarily used Skype (pre-Slack). I don't want to go back to that.
Skype had one benefit: it was easier to add folks to your DM. Other than that, Slack is better. It's essentially Skype++ for us. Bots ... well they never really did much.