You can't turn off notifications on MacOS AFAICT, but you can set "quiet hours" to 24 hours a day. So now I only see any notifications if I happen to be using my computer at exactly 10:00 pm.
If you have any notifications you actually do want, this isn't a viable solution. But personally I have yet to ever see a notification on my computer which I considered important.
If you have any notifications you actually do want, this isn't a viable solution. But personally I have yet to ever see a notification on my computer which I considered important.