Good argument going here but here is what internet tells me about 'facts':

Its about the same amount of population who have access to clean water and who have access to internet, and that's maybe about 75% of global population for both. Don't know how they overlap, but probably there is people who have no access to internet but have access to clean water and the other way around.

In absolute terms that is still billions of people. Billions.

with a good enough LLM you can greatly increase the capability to build a functioning well (and other basic infrastructures) in remote and undeveloped areas without great technical knowledge, they are very good as assistants for practical tasks where you can give feedback step by step on what is happening