Are you sure you're in a position to be saying things like that? The closed source Xerox printer driver incident is generally viewed as the origin of RMS's thinking on Free Software, not the Symbolics incident. And, as others have pointed out, you were mistaken even on the particulars of that.
As for Free Software not being about no restrictions, may I remind you of the four freedoms that are at the heart of the Free Software philosophy? Copilot runs afoul of none of them and I would go so far as to say that Copilot is an embodiment of 1 through 3.
"A program is free software if the program's users have the four essential freedoms:
- The freedom to run the program as you wish, for any purpose (freedom 0).
- The freedom to study how the program works, and change it so it does your computing as you wish (freedom 1). Access to the source code is a precondition for this.
- The freedom to redistribute copies so you can help others (freedom 2).
- The freedom to distribute copies of your modified versions to others (freedom 3). By doing this you can give the whole community a chance to benefit from your changes. Access to the source code is a precondition for this."
Again, the GPL is a tool to achieve the Free Software philosophy, not the end goal.