Bluetooth based messaging apps are naturally able to circumvent internet restrictions that inhibit protests, citizen journalism and other kinds of unapproved activities but there are several ways Bluetooth could be updated as a protocol to introduce compatibility with some kind of antibody-esque suppression of communication standard.
It's just a matter of interested parties setting up a body to create the standard, which might genuinely be a huge bottleneck under the current geopolitical landscape.
Meshtastic, reticulum, meshcore... We need more.