Obvious as it may sound, people with authoritarian beliefs hiding behind free speech actually consider it as a weakness akin empathy. It allows losers like them to amplify their reach despite not being in power. They abandon their “free speech absolutist” postures the moment they think they are in power.
Fascism is incompatible with any kind of freedom. Free speech is co-opted by conservatives and fascists so that they can promote bigotry without consequence. There is no reason that members of the KKK should be legally allowed to recruit people. That should be against the law. It should be against the law to promote xenophobia, racism, misogyny, and queerphobia. The only people who benefit from a system where you can espouse those beliefs without legal consequence are bigots and fascists.