No, Slack-mania can't be cured with systemized discipline.
Slack is a pox. It's not just about endless notifications that kill your ability to focus, it's an environment that actively encourages organizational anti-patterns. If you have a question, first you ask your manager. If Slack makes it easy to reach out to someone directly, your manager will tell you to Slack them. If you don't have Slack, and you don't have people's phone numbers, instead you get directed to documentation / wiki / support ticketing.
Organizational choice architecture matters. Slack makes bad choices easy and good choices difficult. That's enough reason to ditch it.
Slack is a pox. It's not just about endless notifications that kill your ability to focus, it's an environment that actively encourages organizational anti-patterns. If you have a question, first you ask your manager. If Slack makes it easy to reach out to someone directly, your manager will tell you to Slack them. If you don't have Slack, and you don't have people's phone numbers, instead you get directed to documentation / wiki / support ticketing.
Organizational choice architecture matters. Slack makes bad choices easy and good choices difficult. That's enough reason to ditch it.