Assorted things, but the biggest was with AppImages. You are supposed to make them executable with a properties tab, as ZorinOS is intended to be a Windows-like experience. However, at some point, AppImages stopped launching, even after rebooting the system. There was no error messages, just nothing happening after trying to launch them. That is bad for troubleshooting, and is vexing. After three or four days trying to resolve such issues with Linux, I got fed up and went back to Windows 11 Enterprise.

In any case, I will attempt another Linux migration when the time seems right. I will let Valve cook, they will bring friendliness and reliability to the masses.