There are a lot of people who believe there is something wrong with proprietary software. You don't have to agree with the FSF or their goals, but it does every

There are a lot of people who believe there is something wrong with proprietary software. You don't have to agree with the FSF or their goals, but it does everyone a disservice to conflate the argument for software freedom with an argument against proprietary software. The FSF considers commercial use and distribution of software to be an important part of software freedom and does not consider licenses that forbid it to be free. And if you think it is unethical to sell proprietary software and refuse to use it oneself, it is also perfectly reasonable to advocate that others follow the same course. A value position that one doesn't believe others should follow isn't a value, it's just a preference.