The groundwater disappearing is a problem if you build up ag/industry/development based on the groundwater availability and then lose that source of water with no economical alternative.
People hate unneeded work, so in the old days, if there were large boulders of granite in fields to clear, they'd hand drill holes in the top. Then, over a few winters, the freezing water would break the granite.
Also, air entrainment has long been (~1930's) used as a means of freeze thaw resistance because it allows some deformation without cracking. Porous concrete has similar flexibility.