My laptop is on macOS Tahoe (so I can support our customers), but my main Mac remains on Sequoia, because I don’t like Liquid Glass and some of the functional changes in macOS Tahoe. But I was tired of the constant "UPDATE TO TAHOE NOW YOU SLACKER!" dialogs that Apple sends my way.

You *can* block this stuff, but it requires installing a device management profile. It’s not as scary as it may sound, and the end result is Tahoe-free Mac usage, at least in 90 day chunks.

https://robservatory.com/block-the-upgrade-to-tahoe-alerts-and-system-settings-indicator/

@rgriff Any idea how to clear the red "1" badge on the System Settings icon in the Dock as well? (I added the profile and checked for updates and System Settings now says I'm running "the latest software update allowed by your organization", but the badge persists…)

@siracusa @rgriff This might be worth a shot if you haven't tried it yet. It has worked reliably ever since 'defaults write com.apple.systempreferences AttentionPrefBundleIDs 0' stopped working.

https://lapcatsoftware.com/articles/badge.html

Hide System Preferences Dock badge