But isn't this part of the point the author of the article is trying to make? In case of Superfish it was United States Department of Homeland Security who advised uninstalling it and in case of Sony's rootkit, a class-action lawsuit. In both cases higher authorities hired by people to protect them, protected them. Not FSF, nor the fact that the code wasn't GPL.
Even if Superfish was GPL licensed, the issue would've persisted. As article mentions even laptops coming with Linux pre-installed hardly come with the Kernel and userspace tools source code and you need to download them separately. Should Lenovo have preloaded Superfish as Linux kernel module and shipped it to its consumer laptops, United States Department of Homeland Security would have still advised removing it.