Nemo wrote:
…Is there a DVD authoring software that compares to DVD Studio Pro …
In short: Doesn't exist.
(Adobes Encore was comparable = EoL either…)
If you need complex Disk creation - beyond 'play a single movie', what FCPX offers - with switchable audio-tracks, Easter Eggs, animated menus et al, only advice is: keep an 'older system' alive (=no updates) for that only purpose.