I'll guess that auto-upDATE doesn't extend to new versions of macOS, which are upGRADES.

It's not a given that users who want to be up to date within one OS version also want to go on to the next version immediately.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire