I’m not sure where you saw forced updates. I’m usually 2 to 3 major versions of macOS behind.
I remember being nagged about upgrading to the latest OS version at least once a day if not more often. Opening my wife's laptop just now, I saw another one of those notifications, begging to update where the only options were "Restart" or "Later".
It'll ask me again later (a few days? a week?), but it won't make any changes immediately, nor will it schedule any changes.