The "aggressive, deliberate, threatening attacks" I have seen in discussions like this almost always seem to come from the FSF crowd. (not necessarily official sources, but supporters in public discussion channels)
If the source available people weren’t trying to appropriate the term Free Software (with capitals) this argument wouldn’t exist. Free Software has a long standing, broadly accepted definition which many of these companies accepted and see to their advantage for many years. Now they want to change their licenses, but keep using the term.
They are trying to take other people’s stuff. They can’t just walk away with all the good Will and social capital Free Software has built up over the years because it’s beneficial to their shareholders. That’s the attack, it’s a smash and grab, and that’s why FOSS is fighting for its life in this.
