Nope nope nope. They've publicly been the biggest voice to erase "open source" from the map since it was coined. All while acknowledging that it has mostly the same goals as the free software movement. http://www.gnu.org/philosophy/open-source-misses-the-point.e...
Words matter. See "pro life" vs "pro choice", see "terrorist" vs "criminal" see "migrant" vs "alleged refuge", etc. etc.
The tech press are mouthpieces for the big corporations, and all of the big corporations do not want free software messing with their profits, so they use and coin words which align with their interests. It's perfectly natural for fsf to use different words.