I don’t see the big deal tbh. Worst case, we go back to writing down lists of numbers to get to places. It’s fun – how it used to be.
Also, the flexibility of the system is such that, if somebody has REAL problem with this, it’s a no-brainer to set up alt.networks that can ride in parallel.
For fun, set up your system for IPv6 sometime. The free tunnels are slower but there’s loads of hidden stuff that you don’t see from here.
Also, there’s ancient technologies you can deploy that everybody’s forgotten about like Gopher. [I got a gopher but you can’t get there from your browser ]