Not a macOS 26 fan? Here’s how to block the alerts or downgrade

My personal view is that macOS 26 is a decent upgrade on balance, despite a few embarrassing mistakes. I also think that a minority of very vocal commenters have given a misleading impression about the level of opposition to the Liquid Glass update. However, if you’ve decided not to upgrade, you’ll be pleased to know that you can stop your Mac nagging you to do so …