In Switzerland, we already switched to MediumFast due to congestion in cities. It was a coordinated change and real world tests showed no significant worse mesh performance for most nodes. Meshtastic is evolving fast and I think it does become more and more viable as an off-grid or doomsday communication. It also is hard to censor which could be useful for journalism and free speech. Hence, not a substitute for the internet, but a more and more viable solution for many.