Why does bitchat use ble and not wifi?

In my nostrmesh proposal I suggested wifi & ble, the range of wifi is often triple ble. Ble would work fine in a busy building, but would struggle beyond that.

Esp-mdf is a good guide nostr:nprofile1qqsgydql3q4ka27d9wnlrmus4tvkrnc8ftc4h8h5fgyln54gl0a7dgspp4mhxue69uhkummn9ekx7mqpzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqg4waehxw309aex2mrp0yhx6mmnw3ezuur4vgkhjsen for self healing mesh using wifi and ble, same should be possible with phone