As usual on Twitter, this lacks nuance. Copyright allows creators to decide how their works can be used. See for instance the GPL as an example for creative use

As usual on Twitter, this lacks nuance. Copyright allows creators to decide how their works can be used. See for instance the GPL as an example for creative use of copyright, and RMS has always stressed that the GPL is a moral issue. It has nothing to do with monetization (it obviously does not require it, but it also does not forbid it). You might say Copyright was initially not be intended to be used like this, which makes the GPL a clever hack, but it shows that Copyright is not a single-edged sword.