Okay, maybe Reticulum isn’t strictly LoRa-based, but others are (e.g. Meshtastic), and while Reticulum works over lots of physical layers, the README specifically states “An open-source LoRa-based interface called RNode has been designed specifically for use with Reticulum.”

Design goals are great. How do they actually achieve it?

Exactly. Okay, that’s a great claim. How? Also, “planetary scale” is meaningless. With the right node count (low), topology, and radios, just about any mesh network can achieve “planetary scale.” But that doesn’t mean it’ll support 10 thousand users, never mind millions. There are underlying technical reasons that the Internet works the way it does.

Not with flood routing.

Yes, you said. You’ve been very helpful in telling us how it doesn’t work.

flood routing works fine locally, from there on use IP to connect the local networks, no need to reinvent the wheel.

Sure, but The Zen of Reticulum repeatedly says that all that centralized infrastructure is bad, bad, bad. So, it seems a bit like cheating if you still need all that to scale.