> Now that app makers have realized we're muting our phones and disabling app notifications, they're doing them within the apps... It creates dependency and anxiety.

This is so true and so widespread that I haven't even realized it's happening. I disabled most push notifications on Android and have the phone muted almost all day. Still, I'm fighting with attention fragmentation, decreased memory etc. Nowadays most apps/web apps you open have a 'notifications' tab, menu item etc. creating yet another inbox for us. (Which we probably don't need unless it's work related or something.)