This pretty much solves the problem of too many bots, but only in a way that works with Cloudflare and does not help the rest of the web. They don't mention any possibility of specifying a different platform to route payments through for instance.
Another interesting protocol that supports LoRa is Reticulum, which uses an announce based system for bandwidth efficiency instead of Meshtastic's flood based routing.
Executing JavaScript on random pages seems like quite a bad idea, spammers could potentially include links to JavaScript which does resource intensive things, like that small and sketchy trend of including Bitcoin miners in websites.