I've heard this a lot, but I wonder how often we mean it. Realistically, the level of effort I'm going to put forward to defend some person on the internet's r

I've heard this a lot, but I wonder how often we mean it. Realistically, the level of effort I'm going to put forward to defend some person on the internet's right to make a particular comment is limited approximately to "writing a comment myself." Defending to the death? As in risking my life? Maybe if someone's violently asserting a right to regulate what everyone says, or even some particular group says, if I don't think they can defend themselves. But one person under non-violent threat? I'll surprise myself if I make it off the couch.