I’m used to Linux having a user experience that looks like a wiki or a professor’s website.

At this point Linux is stable and works and is reliable. It just usually looks jankey.

I was pleasantly surprised to find that the zorin desktop experience reminded me of a professional OS.

What kind of OS are you calling professional?

Solaris is dying, Irix last release was in 2006, is nowhere to be seen, all that is left is AIX and HP-UX but their available desktops are the very same you find on Linux and the BSDs