So the choice is this: Allow companies to sue people because of a few trolls and make everyone scared, or tolerate a few trolls and let the people speak their minds without fear. I would prefer the second option.
I am perfectly happy letting this guy get fucked up in a civil suite so other can learn what this dude failed to learn. Your actions have consequences and free Speech doesn't mean you can say whatever you want to say. Some just have to be an example for others.