While I think you are a wizard-level expert on cryptocurrency, I don't think land is becoming irrelevant in the scheme of money - not yet, and not in the foreseeable future. Land is needed by most factors of production (knowledge is a notable exception.) World population is projected to reach 9 billion around 2050. 3 billion new people will need land for themselves, but the supply of land is quite inelastic even in the long term. Thanks to global warming supply of raw land might even decrease. Cavemen did not need internet but they needed land. Unless we find a way to upload ourselves into the digital network, land is going to play a big role.