I think when you get down to debating definitions you’ve probably lost some of that professionalism.
As a manager I probably would be reprimanding people debating definitions like this. We should be asking: “do we understand each other?”
The point of this entire argument is Stallman isn’t paid, dedicates his life to this work, probably is overworked and runs his org and does so completely openly (ie you’re likely to see lots of good and some bad). He’s not a professional; he’s a passionate, often crazed and zealous leader of an organization with an extreme position (free software being the exception not the rule).
I frankly wouldn’t expect anything from Stallman. Manners, personal relationship, etc.