I'm glad that you ended this statement with "for the desktop".
Linux is thoroughly used in other areas, where it clearly is preferred over other alternatives. Many of the tasks that are taken for granted today, like music or video streaming, is done through servers running Linux.
As for what role it plays on the desktop, some statistics point out to tasks related to software development and system administration:
For ZorinOS in particular, I agree with what others have said.
On related news, Linux smashes another market share record for August 2024 on Statcounter.