I totally agreed with that: their Server OS is superior to their Desktop OS.

I just think it's mainly because their Desktop OS has fast enshittified after Windows 7 rather than because Windows server is actually all that great as a server OS.

In fact, thinking about it, one might even say that Windows Server is better than the Desktop version because it's to a very great extent a Desktop OS (in terms of having things like having an a complex UI layer and set of support applications integrated) the very thing which is actually a large part of the reason why its an inferior server OS for typical server-side scenarios because there what you most value is maximum computing resources made available to the server applications (which tend to be heavy users of computing, memory, networking or a combination of those) and an integrated UI layer actually uses more of those just for the OS (both directly for its own work and indirectly from the added complexity of a bulkier OS resulting in less streamlined execution paths) making fewer resources available for the same hardware.

If you look at the Linux distros and distro variants for server deployment they are actually vastly inferior to the Windows OS Desktop - for starters because they're command-line only, though nowadays there's often web-based management interfaces which are still a much lighter option than a directly integrated UI layer - exactly because absent an intergrated UI layer, not adding the UI support on top via something like XWindows or Wyland on a server Linux distro actually makes them better for server tasks.