I wouldn't jump to such conclusions so fast about the deployment and usage of this driver. Included with many distributions and several devices require its usage.
It doesn't look to be enabled in Fedora, Debian, Ubuntu, Mint or OpenSuSE to me, which covers the top five. Which distributions are you referring to?
I see OpenSUSE disabled it back in 2013 with a commit message '"Take it behind the barn and shoot it." says Michal. :)', presumably in response to inspection after its previous vulnerabilities -- http://kernel.opensuse.org/cgit/kernel-source/commit/?id=2c1...
I see OpenSUSE disabled it back in 2013 with a commit message '"Take it behind the barn and shoot it." says Michal. :)', presumably in response to inspection after its previous vulnerabilities -- http://kernel.opensuse.org/cgit/kernel-source/commit/?id=2c1...