You aren't wrong, but there are different conceptions of the word "freedom". Stallman explains the specific values of the word "freedom" related to Free Software at the beginning of the talk.
So he is advocating not using things that restrict people's freedom (in the Free Software sense).
It is similar to the bit about licenses near the end of the talk - Stallman says that an MIT/BSD license allows some people to alter the source and transform it into proprietary code and therefore they would reduce the (Free Software) freedoms of a user.
So he is advocating not using things that restrict people's freedom (in the Free Software sense).
It is similar to the bit about licenses near the end of the talk - Stallman says that an MIT/BSD license allows some people to alter the source and transform it into proprietary code and therefore they would reduce the (Free Software) freedoms of a user.