Nor do I think this is as simple as “you can simply exit the program.” If the company or team has certain expectations on communication that won’t work if you do it without consulting with your team. A lot of people are not in this sort of position where they can take an action like that and not be ostracized.
Imagine ignoring calls or emails from your boss for a day or two when it’s clear that boss expects responses in a specific time? Exiting Slack can have the same effect at a lot of companies.
I simply think more companies need to take the time to discuss how tools will be used and for what purposes so everyone is on the same page. We have always published an etiquette guide that is open for debate/change. But most places I’ve worked use Slack and most places simply don’t discuss how it’s used so everyone has different expectations. And being the one person trying to fix this problem in a team can make you feel crazy.