I know almost nothing about how to operate a Linux system, but what i do know is that it's customizable and can be made to run with a very light load on your hardware if you want it to.
So, a CoD Linux dedicated server will mean that people can rent gameservers for less money and still have the same performance, or they might spend the same amount of money but have superior performance.
Easier to run a server = more people will be enticed and able to do it = more servers for us to fly on. Hence, i support the idea as well