It is a political statement, just like all the other contents of your daily life. Whether you eat granola, recycle religiously and commute on a Breezer, or dress up in full Disco kit and spend thousands of dollars on carbon fiber parts, you're making a political statement. Whether you drive a Hummer or a Prius, you're making a political statement. Whether you eat lunch at McDonalds or the local veggie co-op, you're making a political statement.
I suppose I'd rather be considered a self-righteous martyr in my own mind than to somehow be under the delusion that I'm NOT making a political statement with everything I do during the course of a day, no matter how silent or apathetic I may happen to be.