Speaking of printing in Linux, I was able to print without any problems on a printer that needed terrible drivers on mac and windows.

I think that's the key to Linux on the Desktop. It generally ranges from very limited to terrible for your average end user. Your video professional might fare slightly better, but realistically is only going to use Linux if they're working at a company that's invested in Linux for their video production stack.

Where the Linux desktop is truly unparalleled is for a developer. As a developer I'm comfortable enough with the technical details to handle the quirks (like doing things from the command line), and the strengths of Linux truly shine (again, the commandline, as well as choices in DE, software, etc). One great example is Arch. On Arch I can install any developer tool directly from the command line with very little effort. Anywhere else and you have to click through endless menus.