The article talks about "constitutional rights": hence the US constitution link. You may not be in the US: in which case, you're right, you shouldn't care.
The usual counter example to statements of the form "You are not free to do something if you are threatened with jail-time or murder or getting beaten or ... ." is "if you yell fire in a crowded theater, expect to get in trouble". You're free to yell, but there WILL be consequences.