This is the first paragraph after the initial quote defining "free software".
> We campaign for these freedoms because everyone deserves them. With these freedoms, the users (both individually and collectively) control the program and what it does for them. When users don't control the program, we call it a “nonfree” or “proprietary” program. The nonfree program controls the users, and the developer controls the program; this makes the program an instrument of unjust power.
It seems safe to say the author thinks that one creating "an instrument of unjust power" for oneself is unethical. Though, perhaps if the commenter in question pulled that quote out of the article, it could have helped their point.
> We campaign for these freedoms because everyone deserves them. With these freedoms, the users (both individually and collectively) control the program and what it does for them. When users don't control the program, we call it a “nonfree” or “proprietary” program. The nonfree program controls the users, and the developer controls the program; this makes the program an instrument of unjust power.
It seems safe to say the author thinks that one creating "an instrument of unjust power" for oneself is unethical. Though, perhaps if the commenter in question pulled that quote out of the article, it could have helped their point.