No , it is called fluid diffusion..
..and you can Turkey baster the res fluid every day for a year and the crap fluid in the calipers will still be trapped in the calipers . It does not RECIRCULATE anywhere. That is why you change it .
Anyone who has changed fluid knows you open the bleeders and push out the old fluid with the new .. that is where the new fluid in the res. comes into play.

That is why Used Car guys use a turkey baster... so you see nice , new fluid in the res., but quess what is still in the calipers and brake lines ...yup... the crappy,old, hygroscopic contaminated brake fluid.

A Turkey Baster is for 'Guys who are not Smart enough to know how to change there fluid'"????
That is some Excellent DIYer advice , that's for sure...............
Give me a break....