[lesuorac]

They point it out because there was an explicit claim to the contrary.

"No one can sue you for expressing your opinion online or IRL. "

[Teever]

A charitable interpretation of that claim would be that 'No one can successfully sue you for expressing your opinion online or IRL.'

[hatefulmoron]

Pointing out that the statement is false in the most uninteresting literal sense is just odd. Sure, you can be sued for that in the same sense that you can be sued for eating a croissant. Glad we got to the bottom of that.