They're arguing against "big water", and shouting that we should all have local wells.

Well... umm... okay, if that makes sense. But it doesn't for most people most of the time.

People as a rule like centralised services, because they can innovate and iterate faster. Centralised services have efficiencies of scale, round-the-clock support, and other perks that decentralised systems generally cannot afford to replicate many times over, at least once for each instance.