I think what they meant was: if you don't play AAA games, or use specific software (Adobe, office, etc.), your safe to migrate.
https://www.reddit.com/r/pcmasterrace/comments/3lno0t/gpu_pa...
I successfully followed this tutorial using Arch Linux as my primary OS and emulating Windows in QEMU with PCI passthrough to the graphics card. Unfortunately, I had too much lag in my Oculus Rift since I didn't have a dedicated USB PCI card to pass-through, but the performance overhead for AAA games was minimal and I was able to max out Fallout 4 with no noticeable performance decrease.
Honestly, I can't think of a time where I my linux machine couldn't do something essential that my windows machine could. But vice versa is another story. Try to run a server on regular windows desktop and it will want to reboot every week for updates. I'm wondering why I got downvotes...maybe simply because I sounded combative or fanboyish...