On one hand, I largely agree with everything that blog posts says.
BUT!
it presents it as some universal, self-evident truth, and I think it's not. Just because the blog author and I and some others think so, doesn't mean it's the only perspective or that everybody feels that way.
I think there exist people who will enjoy that language, who will understand that language, and to whom that language speaks. My wife, possibly. My sister, almost certainly. Many others in my circle of friends, co-workers, and acquaintances.
And, it's Mozilla. I don't think it's 100% accurate to say "you're a tech company" or that FireFox is "just a browser". Mozilla foundation is non-profit, and it does have goals and vision. It is, I think inherently "political", though not necessarily in the current American sense of "political" which seems to mean "partisan" or "bad". It has a goal and perspective and a point of view. It's trying to do something beyond generate profit for shareholders, so I don't think it's accurate to brand it as "just a tech company" (whether one agrees with its goals, methods and progress is orthogonal).
Ultimately, some people DO choose Firefox as a political statement (that statement perhaps being as simple as "I support independent choice of technology" or "I want my browser to work for me" or even "I don't want Google to COMPLETELY own my life" :). Some people DO see it as a way to vote, or impart a change.