Dear calendar, please just sync.
Calendars Demand Consistency
In some instances, not all of your calendars will sync from Google Calendars to all of your devices. I have noticed this in particular with a subscribed calendar.
On the opposite, Google Calendar loves to sync one of its own custom
Contacts calendar… you can
turn that off too.
Sneaky Google Calendar Sync Settings Page
Navigate to this Google Calendar Sync Selection page where you can toggle each calendar on and off.