I interpreted this as just a clumsy rewording of the old quote, "I disapprove of what you say, but I will defend to the death your right to say it"

Free speech advocates support the right of everyone to set up a stall in the marketplace of ideas, but don't have to support every idea that sets up a stall.

A publisher of gay erotica might support free speech, and find themselves alongside revolutionary communists, hitler-heiling nazis and radical islamists distributing bomb-making manuals - but the groups aren't allies or friends outside of that.

Well, their defence now is probably contingent on a donation first.