My claim is that "free speech absolutism" is more consistently used to protect the rights of those belonging to traditional power structures than the rights of the downtrodden. I am skeptical of it as a viable ideology when there are populations who enjoy the benefit of this ideology who'd waste no time throwing me in prison if they were granted a legislative majority.

This is why I don't find examples of historically oppressed groups (Jewish people) defending the rights of historically powerful groups (white supremacists) to be a compelling argument that free speech absolutism will actually protect my rights if it came to that.