Short answer is no. Some apps like Curtains cannot be updated for Win 11 because of changes made to that OS by MS. If you look at the list, it will never be an exact match because some apps that were made for 10 already has a new version for 11. Most of the popular apps have been updated though, and work under Windows 11, as you can see.

The ones that work on Windows 10 that has not (yet) been updated are: Curtains, Icon Developer, Soundpackager, Spacemonger & Thememanager. Some of these may or may not get updated, but nothing official announcement has been made.

Object Desktop is Stardock's Subscription Service to their software.  It is not a one-off purchase by definition.

The current [new] process is that your on-going subscription enables access to all the listed programs and any others that may evolve/change within that subscription time.  In the same manner that your AV program is active only during its subscription and will cease to function once the suscription is no longer current the same will apply to the Object Desktop [subscribed] software.

Object Desktop is by far the best option for ongoing and extensive use of Stardock's suite of programs as provided you're using several of them it's the most economical and keeps your system future-proof...