"Isn't it both."
Free software started out by saying that people should make free software because to do anything less (proprietary software) was unethical. Open source started as a branch off of free software, from people that rejected the ethical point of view taken by free software. The perspective taken by open source was that software could be made technically better. That may be true, but it's not the point made by free software. So while the software itself may be the same, the different camp's reasoning for making it as vastly different. Unfortunately, open source's view of "we should be doing this in order to get technically better software" has become much more widely known that free software's message over ethics. So much so that people even call Richard Stallman the father of open source! ALG was saying you should align your document with the message of values and ethics, not the practical values of better quality software.
