Have you heard the expression "Freedom isn't free"? People aren't saying "Liberty isn't liberty", they're saying "Liberty isn't free of charge." Similarly, this

Have you heard the expression "Freedom isn't free"? People aren't saying "Liberty isn't liberty", they're saying "Liberty isn't free of charge." Similarly, this person is saying "Libre software isn't free of charge." You're not informing them of something they didn't know.