

You could even argue it with the data structures and the protocol itself: Modelling chat rooms as graphs (“directed acyclic graphs”), which need to be eventually consistent from beginning to end is plain madness for big and long-living public spaces. This blog post is a good collection of some of the major problems coming from that: Why not Matrix? - telegra.ph


meshtastic very quickly runs into problems with congestion. at around 100 users in a local mesh it becomes super unreliable and in urban areas it is really hard to use. meshcore (a separate network) tries to fix some of that, but is still tied to lora devices and super low bandwidth.
reticulum is not as mature yet, but its protocol is completely transport agnostic, meaning you can mesh almost anything from bluetooth and local wifi to lora, fibreoptic cables, packet radio and telegraph lines. and most importantly: it is a whole new networking stack, not just a single app like meshtastic/meshcore