In addition to a lack of an up front recognition of the Freedom ethic, the use of the word 'Linux' *only* when referring to an operating system creates an uncertainty. This is because Linux is formally the name of the kernel, not an OS. I note that we do not really have a generic name for a Linux based Operating System in its own right except perhaps 'GNU/Linux', or a brand name such as Ubuntu, Fedora, etc.
Opposition to Linux based OS use comes in many forms, including well funded 'FUD'. Fear Uncertainly and Doubt. By unwittingly underwriting Uncertainty in the Linux using culture we do ourselves a dis service.