There is meshcore or meahtastic for that already. And with way greater range
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But you need a separate device for that
Being able to use readily available, commodity hardware is a big plus. What the smartphone did for photography compared to dedicated cameras is a good comparison.
Once wifi direct is enabled as a transport that will fix the range issue somewhat, extending from tens of meters to hundreds, plus the already released version that can use Nostr relays over the Internet.