I was an early user of the Z690-A from 2022 and while it was dull in features, the basics (Boot Menu) were already present. The configuration UI was TianoCore/EDK2:

https://youtu.be/eSz2VPH64SE?t=343

https://docs.dasharo.com/dasharo-menu-docs/dasharo-system-fe...

I do recall hearing the same thing than you but for those that used SeaBIOS and needed to recompile and reflash just to change boot order...