I think we could also get started now. Not necessarily de-escalating tech, but realizing that the fundamental supply of newer, more powerful chips might not last even with a shift to more plentiful supplies of rare-earth metals due to our need to get off of fossil fuels, fast. I think it might be useful in the more immediate term to be able to lock-in the minimum set of features that make the web and Internet useful then distribute that as widely as possible on low-power, commodity platforms with resilient networks that could survive super-storms knocking out huge swaths of devices in one fell swoop.
Low-power p2p protocols, mesh networking, recycling devices, component-platforms that allow scavenging and make-shift repairs, etc.
Until we can solve the green energy problem it might be nice to know that even if your community gets hit with a storm or flood, it's still possible to restore and maintain network services rapidly in the aftermath. Simply being able to send a message to someone would be a big deal.