Yes and no. The way to refute a bad comment is by respectfully providing better information, and this is very much a question of content. "This is some capitalist nonsense" obviously doesn't do that.
It may feel to you like you were refuting the GP as much as it deserved, but from the point of view of an open-minded reader who's here to learn and doesn't have a fixed position, your comment contains no information, only name-calling.
Don't forget that all this is a matter of degree. Degrees of badness matter; responding to a bad comment with a still-worse one is a step in the wrong direction.
It may feel to you like you were refuting the GP as much as it deserved, but from the point of view of an open-minded reader who's here to learn and doesn't have a fixed position, your comment contains no information, only name-calling.
Don't forget that all this is a matter of degree. Degrees of badness matter; responding to a bad comment with a still-worse one is a step in the wrong direction.