How I feel about it is irrelevant. You’re preventing absolutely nothing by refusing to go into an airport when there are much better ways that the government can track you - including your cell phone and credit card usage. It means nothing that you are avoiding airports.
It not only doesn’t “mean much”. It means nothing.
If nothing else, though, it means something to me: it means avoiding a place than I am incredibly uncomfortable being in, and I'm not rewarding systems and behaviors that I think are harmful. That's a win all by itself.
We also have tens of thousands of homeless and millions of undocs in our corner that don’t do a lot of the three. Add to the few privacy conscious and I dispute those figures.
It not only doesn’t “mean much”. It means nothing.