If it were a for-profit, private company which was "flexing" I'd agree with you. But EFF works hard to defend our rights and internet freedom.
If they bolster their wins with some overly excited language, I believe they are well within their right. Also, it serves as a good way to promote their work and incentivise people to contribute.
I fail to see an issue with their approach here but would like to hear a counter argument if there is one.