seems a fix. so far so good for me.
sync your Apple calendar with your Goog calendar, if you haven't already.
https://support.google.com/calendar/answer/99358?hl=en&co=GENIE.Platform=Desktop
Make all your cal entries in either cal app. Email and/or plain alerts, whatever you favor.
Email alerts can only be set from Apple cal. But you knew that.
If you've never sunc (giggle) the cals, they sync pretty quick, minutes at most. If you prefer, just refresh either, Cmd/R.
Cntrl click (right click) on a sync'd Calendar name from the upper left corner list in Apple Calendar.
Select "get Info". There is a check box in the window that says "ignore alerts". Check it.
I know, sounds insane.
Now just wait for nothing to happen.
Or test, as I did. Made new events 2 days from now on 2 ignored cals and 2 on unignored (ok, this may not be an actual word, but you get the idea) cals. The ignored sent me 1 email. The unignored (again) sent multiples.
If you're one of those people who wants nothing to do with big bad googoo, get over it.
Little difference between the corporate culture vultures.
You're welcome. Back to work you lazy dawg!
“The will of the people is only considered when it is more profitable than every other option.”
Diego Realisto