The powers that be decided at least 10 years ago that DVDs were dead. Adobe abandoned their never-finished Encore (it could create menus but had no ability to write scripts to say what to do when those buttons were clicked), and Apple abandoned DVD Studio Pro (which should have upgraded along with Final Cut Pro X, but did not). Those are the two applications which can create menus, buttons, subtitle tracks, etc. for a true DVD. I know this because it’s what I do for a living.
I run DVD Studio Pro in a VMware Fusion virtual machine which runs Snow Leopard. That way, all the buttons and functions of DVDSP work; later macOS versions cause color pickers and other things to disappear.
Unfortunately, no one has ever created 64-bit DVD authoring software for macOS, either on Intel or Apple Silicon. (The situation is just as bad on Windows, BTW. The $20,000 software for Windows has also been abandoned.) All of us who build DVDs professionally just pray that our hardware doesn’t break down before our last client receives their disc master!
I will certainly watch this thread for any software that runs on Sonoma—wow, that would be miraculous—the industry would party like it’s 1999!