People will call if it’s actually urgent. But gotta protect/prioritize yourself in this new faux-remote reality.
A better middle-ground might be to have a separate phone, so it's only with me if it has to be. Starting a new job with this setup soon, we'll see how it goes.
It's especially useful at the moment, because I'm in a small company and we do devops.
If I start getting a barrage of work-related IMs after-hours, first I'll point out to the offender that I expect them to respect boundaries. Then I'll try to configure quiet hours. Finally I'll remove the apps.