Scolding on tone aside, the comment by RomanPushkin is also correct:
> FYI, there is no FOSS -- that expression is a misunderstanding. There is the free (libre) software movement, and there is the open source non-movement: two different viewpoints based on different values.
This is very much the literal truth at least in my little world. Stallman's vision and response (the GNU license/weapon) are very much the "alpha and omega" of Free Software. In contrast, the entire "Open Source" non-movement either doesn't get it or doesn't care. From the POV of a free software true believer (Hello there!) there is no point to Open Source.