I don’t understand this complaint. What notifications are you getting? The only thing I get is the notice from windows defender telling me a scan completed.
With the latest Windows update that notification had a button with something like "see fewer of these" which took my into the settings where I could turn off that specific notification.
Also the focus notification when using a fullscreen app. Had to turn it off in two different places. Granted my mac gets a ton of notifications too so its not that big of a deal. Microsoft could just use with a little better notification management screen to quickly turn them off.